0
We're unable to sign you in at this time. Please try again in a few minutes.
Retry
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
Retry
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......
Article |

Prospective Associations Between Early Childhood Television Exposure and Academic, Psychosocial, and Physical Well-being by Middle Childhood FREE

Linda S. Pagani, PhD; Caroline Fitzpatrick, MA; Tracie A. Barnett, PhD; Eric Dubow, PhD
[+] Author Affiliations

Author Affiliations: Centre de Recherche de l’Hôpital Sainte-Justine, Université de Montréal, Montréal, Canada (Drs Pagani and Barnett and Ms Fitzpatrick); Department of Psychology, Bowling Green State University and Institute for Social Research, University of Michigan, Ann Arbor (Dr Dubow).


Arch Pediatr Adolesc Med. 2010;164(5):425-431. doi:10.1001/archpediatrics.2010.50.
Text Size: A A A
Published online

Objective  To estimate the influence of early childhood television exposure on fourth-grade academic, psychosocial, and lifestyle characteristics.

Design  Prospective longitudinal study.

Setting  Institut de la Statistique du Québec, Québec, Canada.

Participants  A total of 1314 (of 2120) children.

Main Exposure  Parent-reported data on weekly hours of television exposure at 29 and 53 months of age. We conducted a series of ordinary least-squares regressions in which children's academic, psychosocial, and lifestyle characteristics are linearly regressed on early and preschool television exposure.

Outcome Measures  Parent and teacher reports of academic, psychosocial, and health behaviors and body mass index measurements (calculated as weight in kilograms divided by height in meters squared) at 10 years of age.

Results  Adjusting for preexisting individual and family factors, every additional hour of television exposure at 29 months corresponded to 7% and 6% unit decreases in classroom engagement (95% confidence interval [CI], −0.02 to −0.004) and math achievement (95% CI, −0.03 to 0.01), respectively; 10% unit increases in victimization by classmates (95% CI, 0.01 to 0.05); 13% unit decreases in time spent doing weekend physical activity (95% CI, 0.81 to 2.25); 9% unit decreases in activities involving physical effort (95% CI, −0.04 to 0.00); higher consumption scores for soft drinks and snacks by 9% and 10% (95% CI, 0.00 to 0.04 and 95% CI, 0.00 to 0.02), respectively; and 5% unit increases in body mass index (95% CI, 0.01 to 0.05). Preschool increments in exposure also made a unique contribution to developmental risk.

Conclusions  The long-term risks associated with higher levels of early exposure may chart developmental pathways toward unhealthy dispositions in adolescence. A population-level understanding of such risks remains essential for promoting child development.

For the past several decades, television has become a ubiquitous fixture and preferred activity in most occidental family environments. Despite clear, age-specific recommendations from the American Academy of Pediatrics1 that discourage any screen media exposure during infancy and less than 2 hours per day beyond 2 years of age, parents show poor factual knowledge and awareness of such existing guidelines.2 One study found that almost half of 12- to 23-month-olds and 41% of 24- to 35-month-olds exceeded recommendations.3

The remarkable childhood intake of mass media has evoked interest in its potential impact, with most studies suggesting negative effects.4,5 Common sense would suggest that television exposure replaces time that could be spent engaging in other developmentally enriching activities and tasks that foster cognitive, behavioral, and motor development. This idea has been empirically supported in adolescent populations.611 Studies have also underscored exposure time as a risk factor for unhealthy lifestyle habits in school-age youth, predicting less than optimal physical activity, body weight, and12 fruit and vegetable intake,13 consumerism,14 and tobacco and alcohol use.1517 Results regarding academic performance have been mixed, with more recent studies suggesting hazardous effects of overexposure.4,1820

Television exposure almost invariably starts in early childhood.3 Indeed, broadcasting has an educational orientation when targeting preschoolers, which might have some cognitive benefits. Nevertheless, preschool televiewing remains a cognitively passive activity at a time when key experiences for developing attention and behavioral self-regulation are expected to occur.21 Two studies have found long-term, albeit modest, associations between early childhood exposure and socioemotional difficulties at school entry and attention problems in first grade.22,23 Another study also found negative effects on verbal and memory skills at ages 6 and 7 for each additional hour of average exposure before 3 years of age.24 Interestingly, exposure between 3 and 5 years of age was linked to improvements in reading recognition. There were no effects on mathematics outcomes.

Past research has mainly focused on older children. The duration between television exposure and outcomes has been short-lived and sometimes even concurrent. Omitted variable bias has also been a challenge. Moreover, some of the observed effects could be attributable to earlier unmeasured exposure or preexisting conditions like difficult temperament, behavior problems, or family dysfunction. Evaluating the influence of television exposure in naturalistic settings offered by population-based studies with typically developing children can help verify its specific developmental risks by affording tighter control of potential confounding variables.

In the present study, we use the Quebec Longitudinal Study of Child Development to examine the influence of television exposure at 29 months and changes in exposure by 53 months on later academic, psychosocial, and lifestyle characteristics in the fourth grade. Measures comprise information from parents and teachers and direct child assessments. It is expected that more exposure and larger preschool increases will be associated with less optimal developmental outcomes.

PARTICIPANTS

Coordinated by the Institut de la Statistique du Québec, the Quebec Longitudinal Study of Child Development originates from a randomly selected, stratified sample of 2837 infants born between 1997 and 1998 in Quebec, Canada (www.jesuisjeserai.stat.gouv.qc.ca/etude_an.htm). At the inception of the longitudinal component, 93 children were deemed ineligible and 172 were untraceable owing to incorrect coordinates. Of the 2572 remaining children, 14 were unreachable and 438 refused participation. Thus, for its early childhood phase, 2120 5-month-old infants (and their families) with parental consent were deemed eligible for follow-up at 17, 29, 41, and 53 months, representing 82% of the eligible target population. Of these, 39% were firstborn. For every school-age wave of the Quebec Longitudinal Study of Child Development, informed consent was obtained from parents, children, and teachers.

Participants were included in this institutional review board–approved study if they had complete parent reports on early childhood television viewing (n = 1314 of 2120 at 5 months). Follow-up occurred in the spring of the fourth grade (mean [SD] age, 121.83 [3.11] months).

MEASURES
Independent Variable

At both the 29- and 53-month follow-ups, parents were asked, “How much time per day does your child spend watching TV?” Scores reflect the total hours of television exposure during both the week and weekends.

Dependent Variables

Fourth-grade teachers rated academic performance and psychosocial adjustment. Mathematics and reading achievement were measured with ratings of child performance relative to the distribution in the class. Children were rated as either near the top of the class (coded as 2) to near the bottom of the class (coded as −2). Teachers also completed the Social Behavior Questionnaire,2527 which comprises several factors pertaining to classroom behavior. The 3 factors of interest for this study were emotional distress (6 items: seemed to be unhappy or sad; was not as happy as other children; has no energy, was feeling tired; cried a lot; had trouble enjoying himself or herself; and is unable to make decisions; α = 79); reactive aggression (4 items: reacted in an aggressive manner when teased; when contradicted; when someone accidentally hurt him or her [such as bumping in into him or her]; or when something was taken away from him/her; and reacted with anger and fighting; α = .89); and victimization (3 items: was called names by other children; was hit or pushed by other children; and was made fun of by other children; α = .77). A classroom engagement scale represented classroom task orientation, compliance, and persistence (11 items: works cooperatively with other children; follows directions; follows rules; follows instructions; completes work on time; works independently; listens attentively; works neatly and carefully; puts a lot of effort into work; participates in class; and asks questions when he or she does not understand; α = .94). All of the teacher-reported factors were rated on a Likert scale with response options including 1 (never or not true), 2 (sometimes or somewhat true), and 3 (often or very true). Higher values indicate a higher degree of the factor. The Social Behavior Questionnaire represents a good predictor of future psychosocial adjustment and school success.24

Parents reported on several indicators of sedentariness: total hours of child of video game use during a typical week; physical fitness relative to other children (rated from 2, much more to −2, much less); physical activity, which reflected the number of minutes their child spent doing physically activity during the weekend; and physical effort, which represented how often the child engaged in effortful activity during free time in a typical week, both ranging from 1 (never/rarely) to 5 (very often). Parents also provided reports of the dietary consumption frequency of soft drinks, sweet snacks, and fruits and vegetables. Responses ranged from 1 (never) to 7 (4 times or more per day). Finally, measures of body mass index (BMI; calculated as weight in kilograms divided by height in meters squared) were measured by trained independent examiners who followed a standardized protocol detailed elsewhere.28

Control Variables

When children were aged approximately 17 months, parents provided data on variables that could possibly influence both television viewing and later outcomes: child's sex; temperament problems (reflecting the sum of parent ratings of difficult and unpredictable temperament); hours of continuous sleep; maternal education (finishing high school = 1 and not = 0); family makeup (2 parents = 1 and not = 0); parent-reported family functioning29 and Social Behavior Questionnaire scores on impulsivity, emotional distress, and physical aggression; cognitive skills using the Imitation Sorting Task30 given by a trained examiner (at 29 months); parent-reported total weekly hours of television exposure (in the fourth grade); and directly measured BMI at 17 months for analyses involving sedentariness.27

STATISTICAL ANALYSIS

This study required a substantial amount of data from several sources and waves. An attrition analysis that compared the 1314 retained cases with television exposure data at both 29 and 53 months and 806 nonretained cases from the original sample (n = 2120) at 5 months (wave 1) on the baseline control variables revealed that children in the retained sample were less likely to come from single-parent families ([UNK] = 0.80 vs 0.81; t2039 = 2.42; P = .04) and had more parent-reported physical aggression at 17 months ([UNK] = 1.25 vs 1.37; t2043 = 2.06; P = .02). At the fourth-grade follow-up, complete data across all variables were available in approximately 50% to 65% of cases from teacher and parent reports. An attrition analysis that compared the complete and incomplete data on demographic measures revealed some differences. Compared with the nonretained cases, our retained sample in fourth grade had more educated mothers ([UNK] = 0.84 vs 0.78; t1309 = 2.83; P = .005), watched less television at 29 months ([UNK] = 8.36 vs 9.08; t1312 = 2.02; P = .04), comprised more girls (53%; t1312 = 2.46; P = .01), and showed more temperament problems at 17 months ([UNK] = 0.53 vs 0.43; t1305 = 2.74; P = .006). There were no between-group differences in family functioning and configuration. We imputed all missing data using the NORM multiple imputations program (http://www.stat.psu.edu/~jls/misoftwa.html).31 By drawing values from the conditional distribution of the variables, NORM uses an iterative method based on and expectation-maximization algorithm to impute missing data, depending on the available and valid observations from the original data set.31

We estimate a series of ordinary least-squares regressions in which a number of fourth-grade indicators of well-being at 10 years of age are linearly regressed on early television exposure. This postulated relation can be interpreted as the effect of increasing exposure by 1 unit on a large array of later well-being measures that forecast later education and health trajectories. Each model features total hours of exposure per week for each individual child at 29 months as the first predictor and a continuous estimate of change in total weekly exposure from 29 to 53 months as a second predictor (ie, later time point subtracted from earlier time point). To best ensure an unbiased estimation of our effects, we account for possible omitted variable bias, which is likely to arise if preexisting individual or family characteristics are linked to our predictors. The influence of change is also above and beyond the 29-month baseline and concurrent television exposure. Thus, the reported analyses apply to this fully controlled model.

Television exposure at 29 months was a mean (SD) of 8.82 (6.17) hours for the entire week and rose to 14.85 (8.05) hours per week by 53 months. Similar to averages found with American children,3 these quantities are within current recommendations of not more than 2 hours per day beyond 2 years of age, assuming that the content is developmentally appropriate.1 Nevertheless, 11% of the children at 29 months and 23.4% of the children at 53 months viewed more than 2 hours of television daily.

Table 1 illustrates the relationship between the baseline controls and weekly hours of television exposure at 29 and 53 months. Children with more educated mothers experienced less exposure at 29 months (8.21 vs 11.29 hours; t1312 = 6.01; P < .001) and less exposure at 53 months (14.53 vs 16.30 hours; t1312 = 2.64; P = .01). Children from single-parent families experienced more exposure at 29 months (8.54 vs 10.01 hours; t1312 = 2.88; P < .04).

Table Graphic Jump LocationTable 1. Standardized Regression Coefficients Reflecting the Relationship Between Baseline Child Characteristics and Televiewing at 29 and 53 Months

Table 2 and Table 3 illustrate the relationship between preschool television exposure and indicators of academic adjustment and health habits in the fourth grade, as reported by teachers and parents, respectively. In terms of academic adjustment, higher levels of televiewing at 29 months predicted lower levels of classroom engagement and mathematics achievement. Every additional hour of early childhood television exposure corresponded to a 7% and 6% unit decrease in classroom engagement (unstandardized β = −0.01; 95% confidence interval [CI], −0.02 to −0.004) and math achievement (unstandardized β = −0.01; 95% CI, −0.03 to 0.01, respectively). Television exposure did not influence reading achievement (data not presented). Victimization was the only psychosocial adjustment variable influenced by television exposure. Each 1-hour increase in early childhood exposure corresponded to a 10% unit increase in the teacher-rated measure of victimization (unstandardized β = 0.03; 95% CI, 0.01 to 0.05). Preschool increments in exposure between 29 and 53 months were associated with a smaller unit influence on victimization (unstandardized β = 0.01; 95% CI, −0.01 to 0.03) compared with the influence of sex and early family characteristics on later classroom engagement.

Table Graphic Jump LocationTable 2. Standardized Regression Coefficients Reflecting the Relation Between Preschool Televiewing and Teacher-reported Academic Adjustment in the Fourth Grade
Table Graphic Jump LocationTable 3. Standardized Regression Coefficients Reflecting the Relation Between Preschool Televiewing and Parent Reports of Sedentary Habits in the Fourth Grade

With respect to indicators of sedentary habits in the fourth grade, every additional hour of exposure in 29 months corresponded to a 10% unit increase in video game use (unstandardized β = 0.10; 95% CI, 0.04 and 0.16), 9% unit decrease in general fitness score (unstandardized β = −0.01; 95% CI, −0.002 to −0.02), 13% unit decrease in time spent in weekend physical activity (unstandardized β = −1.53; 95% CI, 0.81 to 2.25), and a lesser inclination toward activities that involve physical effort by 9% (unstandardized β = −0.02; 95% CI, −0.04 to 0.00). Preschool increments in exposure also made a unique contribution to the above habits, beyond the 29-month effects.

As illustrated in Table 4, 29-month and preschool increments in television exposure predicted 5% and 3% unit increases in the probability of being categorized as overweight in the fourth grade, according to age and sex BMI reference ranges (unstandardized β = 0.05; 95% CI, 0.01 to 0.09 and unstandardized β = 0.03; 95% CI, 0.01 to 0.05), respectively. Early television exposure also predicted lower scores on fruit and vegetable intake by 16% (unstandardized β = −0.04; 95% CI, 0.06 to −0.02) and higher consumption scores for soft drinks and snacks by 9% and 10% (unstandardized β = 0.02; 95% CI, 0.00 to 0.04 and unstandardized β = 0.01; 95% CI, 0.00 to 0.02), respectively. Increments in preschool exposure only predicted increased snacking scores among the dietary intake variables (unstandardized β = 0.01; 95% CI, 0.00 to 0.02).

Table Graphic Jump LocationTable 4. Standardized Regression Coefficients Reflecting the Relation Between Preschool Televiewing and Fourth-Grade Measures of Body Mass Index and Dietary Intake

Early childhood is characterized by critical periods in both cognitive and behavioral development.32 Cognitively, the early years culminate in developmental expansion of intellectual skills that help children better process information, transact with their environment, and eventually use logic to understand mathematical and scientific operations.33 Behaviorally, viewing habits begin early and persist into the school years, much like other lifestyle practices.2,34 Developmental dispositions crystallize and subsequently influence adjustment and preferred activities.35

As expected, we observed modest, yet nontrivial prospective associations between early television exposure and fourth-grade outcomes. Preschool increments in exposure also made a unique contribution to developmental risk. This contribution is also above and beyond the influence of exposure at 29 months.

First, the results support previous suggestions that early childhood television exposure undermines attention.23 Higher levels of early childhood television exposure predicted less task-oriented, persistent, and autonomous learning behavior in the classroom, according teachers. Our classroom engagement variable assessed “learning-related strategies” that encompass a constellation of required autonomous behaviors including but not limited to attention, self-discipline, self-investment, and productivity over pleasure despite boredom and/or frustration.3638 As such, they assess essential attention-related executive function skills in the classroom. We must bear in mind that early television exposure was measured at a time of substantial growth in the brain regions recruited for the foundations of such effortful control processes,6,34 which then forecast cognitive skills in kindergarten39,40 and adolescence.41 Because these require the successful development of effortful control,37 our results suggest that early television exposure could eventually foster risk toward a more passive rather than active disposition when attending to learning situations.

Our results also suggest a prospective long-term association between early television exposure and mathematical achievement but, surprisingly, no beneficial or harmful effects on later reading achievement. Cognitive neuroscience suggests a comparatively stronger relationship between early attention and foundational mathematical skills than between early attention and foundational reading skills.39 Given that early exposure negatively influences attention,23 it might be that disrupted attentional processes undermine mathematical achievement by virtue of their common foundational links in early childhood.42 A forthcoming study also finds a prospective association between kindergarten number knowledge and second-grade classroom engagement, as expected, with no links between receptive vocabulary and later classroom engagement.36 Further investigation is warranted before more can be said about the role of attention as an explanatory factor in cognitive outcomes. As for the lack of significant results for reading achievement, it could be that the negative effect of early exposure on cognitive skills and small benefit of preschool exposure on reading recognition skills at the first grade transition shown in a previous study23 fade once reading skills are consolidated by the middle grades.

Mental health professionals estimate diagnostic and prognostic clinical decisions regarding children by using normative indicators of social and academic functioning. This study examined emotional distress, reactive aggression, and victimization as respective indicators of internalizing, externalizing, and peer rejection experiences at school. Higher levels of early childhood television exposure predicted greater chances of peer rejection experiences such as being teased, assaulted, or insulted by other students, according to teachers. The long-term nature and significance beyond sex and preexisting individual and familial factors makes this result noteworthy. Social interactions are considered essential components of early childhood experience. Because there are only so many hours in a day, more televiewing leaves less time for such foundational experiences. Nevertheless, we found no links to reactive aggression. This is unusual in the context of the victimization finding. Usually, in population-based samples, being more prone to victimization translates into being more prone to using aggression to retaliate.43 Taken in context, our results suggest that reduced time for critical social interactions in early childhood owing to displaced time spent watching television may present later specific risks of developing inadequate social skills.

Early and preschool television exposure were prospectively linked to sedentariness, with 29-month exposure predicting 9% to 13% unit decreases across all 4 indicators. The finding for video game playing likely illustrates developmental continuity in screen time from early to middle childhood. The statistical control of concurrent television exposure makes the prospective associations even more noteworthy.

Last, we observed consistent prospective associations between early exposure and fourth-grade BMI and dietary intake, above and beyond preexisting childhood BMI. Although early exposure predicted higher BMI and intake of sweets and soft drinks, its most negative influence was on fruit and vegetable intake. Also, preschool increments in televiewing predicted higher levels of sweet snacking and BMI. It is more than plausible that the early years are particularly crucial for behavioral dispositions toward sweet snacking while engaging in hands-free and inactive leisurely pursuits like watching television. Suggestive advertisements for these types of food may further exacerbate this association.6,14

Preexisting maternal or familial factors predicted television exposure and were consistently related to most of the dependent variables, making them, in addition to sex, essential as controls. The other variables implemented as controls did not achieve importance as predictors of television exposure. Moreover, child temperament, early behavior, and sex did not predict early television exposure or preschool changes in exposure. This means that mothers did not favor more television exposure for boys or children with temperamental or behavioral problems. This finding, although far from the main objective of the study, is interesting given that it rules out alternative explanations about parental use of television as a buffer for negative interactions with more challenging children. Although some controls factors were unrelated to the television variables, their inclusion was substantively justified in relation to the outcome variables.

We underscore several limitations associated with using population-based longitudinal studies for secondary analyses. First, the measure of television exposure was not ideal because it did not comprise a finely tuned scale of televiewing quantity nor did it assess the actual quality and content of television exposure. Nevertheless, the measure used was robust enough to estimate the unique contribution of total weekly hours of exposure in relation to later well-being on a broad range of outcomes.34 Second, there is concern about attrition bias because selection criteria required having data at both 29 and 53 months. This resulted in a lower risk sample for analysis. Third, children were not individually tested for achievement in mathematics and reading. Teacher reports may not have been sensitive enough to detect more compelling results regarding verbal skills. Achievement tests would have been ideal.

Because it seems so innocuous and entertaining, a population-level understanding of the developmental risks associated with television exposure remains challenging.5,44 In the spirit of preventive medicine, which concerns itself with promoting health and preventing illness,45 we conceptualized children's outcomes at 10 years of age as markers for subsequent mental and physical health. The results, which only address early childhood exposure in terms of quantity, are compelling, given that we might have expected the prospective associations to disappear after 5 years. Remarkably, the results suggested adverse effects despite having a low-risk sample, making the “potential for harm” public health argument stronger. Exposure at 29 months had the most consistent negative prospective associations across domains. They proportionately exceeded or were as large as concurrent television exposure. There are no studies, to our knowledge, that address the potential long-term effects of early television exposure on a comprehensive range of key developmental variables with several data sources and a consistent application of preexisting control variables. Our findings, spanning different levels of child functioning, support the need for better parental compliance with American Academy of Pediatrics television exposure guidelines for young children.1

Correspondence: Linda S. Pagani, PhD, École de psychoéducation and Groupe de Recherche sur les Environnements Scolaires, Université de Montréal, CP 6128, succursale Centre-ville, Montréal, QC H3C 3J7, Canada (linda.s.pagani@umontreal.ca).

Accepted for Publication: January 13, 2010.

Author Contributions: The authors had full access to all of the data in the study and take responsibility for its integrity, and accuracy of the data analysis. Study concept and design: Pagani, Fitzpatrick, and Dubow. Acquisition of data: Pagani. Analysis and interpretation of data: Pagani, Fitzpatrick, Barnett, and Dubow. Drafting of the manuscript: Pagani, Fitzpatrick, and Dubow. Critical revision of the manuscript for important intellectual content: Pagani, Fitzpatrick, Barnett, and Dubow. Statistical analysis: Pagani, Fitzpatrick, Barnett, and Dubow. Obtained funding: Pagani. Administrative, technical, and material support: Pagani and Dubow. Study supervision: Pagani.

Financial Disclosure: None reported.

Funding/Support: This study was supported by Canada's Social Science and Humanities Research Council International Collaboration Fund, 861-2007-1005.

American Academy of Pediatrics; Committee on Public Education, American Academy of Pediatrics: children, adolescents, and television. Pediatrics 2001;107 (2) 423- 426
PubMed Link to Article
Funk  JBBrouwer  JCurtiss  K McBroom  E Parents of preschoolers: expert media recommendations and ratings knowledge, media-effects beliefs, and monitoring practices. Pediatrics 2009;123 (3) 981- 988
PubMed Link to Article
Certain  LKKahn  RS Prevalence, correlates, and trajectory of television viewing among infants and toddlers. Pediatrics 2002;109 (4) 634- 642
PubMed Link to Article
Villani  S Impact of media on children and adolescents: a 10-year review of the research. J Am Acad Child Adolesc Psychiatry 2001;40 (4) 392- 401
PubMed Link to Article
Jordan  AB Exploring the impact of media on children: the challenges that remain. Arch Pediatr Adolesc Med 2006;160 (4) 446- 448
PubMed Link to Article
Anderson  DRHuston  ACSchmitt  KLinebarger  KLWright  JC Early childhood television viewing and adolescent behavior: the recontact study. Monogr Soc for Child Dev 2001;66 (1) I-VII, 1- 47
PubMed Link to Article
Brady  SSMatthews  KA Effects of media violence on health-related outcomes among young men. Arch Pediatr Adolesc Med 2006;160 (4) 341- 347
PubMed Link to Article
Bushman  BJHuesmann  LR Short-term and long-term effects of violent media on aggression in children and adults. Arch Pediatr Adolesc Med 2006;160 (4) 348- 352
PubMed Link to Article
Bickham  DSRich  M Is television viewing associated with social isolation? roles of exposure time, viewing context, and violent content. Arch Pediatr Adolesc Med 2006;160 (4) 387- 392
PubMed Link to Article
Valkenburg  PMVan der Voort  THA Influence of TV on daydreaming and creative imagination: a review of research. Psychol Bull 1994;116 (2) 316- 339
PubMed Link to Article
Earles  KAAlexander  RJohnson  MLiverpool  J McGhee  M Media influences on children and adolescents: violence and sex. J Natl Med Assoc 2002;94 (9) 797- 801
PubMed
Andersen  RECrespo  CJBartlett  SJCheskin  LJPratt  M Relationship of physical activity and television watching with body weight and level of fatness among children: results from the Third National Health and Nutrition Examination Study. JAMA 1998;279 (12) 938- 942
PubMed Link to Article
Boynton-Jarrett  RThomas  TNPeterson  KEWiecha  JSobol  AMGortmaker  SL Impact of television viewing patterns on fruit and vegetable consumption among adolescents. Pediatrics 2003;112 (6, pt 1) 1321- 1326
PubMed Link to Article
Chamberlain  LJWang  YRobinson  TN Does children's screen time predict requests for advertised products? cross-sectional and prospective analyses. Arch Pediatr Adolesc Med 2006;160 (4) 363- 368
PubMed Link to Article
Dalton  MASargent  JDBeach  ML  et al.  Effect of viewing smoking in movies on adolescent smoking initiation: a cohort study. Lancet 2003;362 (9380) 281- 285
PubMed Link to Article
Robinson  TN Does television cause childhood obesity? JAMA 1998;279 (12) 959- 960
PubMed Link to Article
Sargent  JDBeach  MLDalton  MA  et al.  Effect of parental R-rated movie restriction on adolescent smoking initiation: a prospective study. Pediatrics 2004;114 (1) 149- 156
PubMed Link to Article
Borzekowski  DLGRobinson  TN The remote, the mouse, and the No. 2 pencil: the household media environment and academic achievement among third grade students. Arch Pediatr Adolesc Med 2005;159 (7) 607- 613
PubMed Link to Article
Hancox  RJMilne  BJPoulton  R Association of television viewing during childhood with poor educational achievement. Arch Pediatr Adolesc Med 2005;159 (7) 614- 618
PubMed Link to Article
Sharif  ISargent  JD Association between television, movie, and video game exposure and school performance. Pediatrics 2006;118 (4) 1061- 1070
Link to Article
Duncan  GJDowsett  CJClaessens  A  et al.  School readiness and later achievement. Dev Psychol 2007;43 (6) 1428- 1446
PubMed Link to Article
Mistry  KBMinkovitz  CSStrobino  DMBorzekowski  DLG Children's television exposure and behavioral and social outcomes at 5.5 years: does timing of exposure matter? Pediatrics 2007;120 (4) 762- 769
PubMed Link to Article
Christakis  DAZimmerman  FJDiGiuseppe  DL McCarty  CA Early television exposure and subsequent attentional problems in children. Pediatrics 2004;113 (4) 708- 713
PubMed Link to Article
Zimmerman  FJChristakis  DA Children's television viewing and cognitive outcomes: a longitudinal analysis of national data. Arch Pediatr Adolesc Med 2005;159 (7) 619- 625
PubMed Link to Article
Dobkin  PLTremblay  REMasse  LCVitaro  F Individual and peer characteristics in predicting boys' early onset of substance abuse: a seven-year longitudinal study. Child Dev 1995;66 (4) 1198- 1214
PubMed Link to Article
Pagani  LTremblay  REVitaro  FBoulerice  B McDuff  P Effects of grade retention on academic performance and behavioral development. Dev Psychopathol 2001;13 (2) 297- 315
PubMed Link to Article
Tremblay  RELoeber  RGagnon  CCharlebois  PLarivée  SLeBlanc  M Disruptive boys with stable and unstable high fighting behavior patterns during junior elementary school. J Abnorm Child Psychol 1991;19 (3) 285- 300
PubMed Link to Article
Dubois  LGirard  M Early determinants of overweight at 4.5 years in a population-based longitudinal study. Int J Obes (Lond) 2006;30 (4) 610- 617
Link to Article
Epstein  NBBaldwin  LMBishop  DS The McMaster family assessment device. J Marital Fam Ther 1983;9 (2) 171- 180
Link to Article
Alp  IE Measuring the size of working memory in very young children: the imitation sorting task. de Ribaupierre  ADevelopment of Working Memory East Sussex, England Lawrence Erlbaum Associates1994;
Schafer  JL Multiple imputation: a primer. Stat Methods Med Res 1999;8 (1) 3- 15
PubMed Link to Article
Shonkoff  JPedPhillips  DAed From Neurons to Neighbourhoods: The Science of Early Childhood Development.  Washington, DC National Academy Press2006;
Piaget  JInhelder  B The Child's Conception of Space.  London, England Routledge & Kegan Paul1956;
Thakkar  RRGarrison  MMChristakis  DA A systematic review for the effects of television viewing by infants and preschoolers. Pediatrics 2006;118 (5) 2025- 2031
PubMed Link to Article
Erik Landhuis  CPoulton  RWelch  DHancox  RJ Programming obesity and poor fitness: the long-term impact of childhood television. Obesity (Silver Spring) 2008;16 (6) 1457- 1459
PubMed Link to Article
Pagani  LFitzpatrick  CFJanosz  MArchambault  I School readiness and later achievement: a French Canadian replication and extension. Dev Psychol In press
Fredricks  JABlumenfeld  PCParis  AH School engagement: potential of the concept, state of the evidence. Rev Educ Res 2004;74 (1) 59- 109
Link to Article
Duckworth  ALSeligman  MEP Self-discipline outdoes IQ in predicting academic performance of adolescents. Psychol Sci 2005;16 (12) 939- 944
PubMed Link to Article
Blair  CRazza  RP Relating effortful control, executive function, and false belief understanding to emerging math and literacy ability in kindergarten. Child Dev 2007;78 (2) 647- 663
PubMed Link to Article
Kochanska  GMurray  KTHarlan  ET Effortful control in early childhood: continuity and change, antecedents, and implications for social development. Dev Psychol 2000;36 (2) 220- 232
PubMed Link to Article
Mischel  WShoda  YRodriguez  MI Delay of gratification in children. Science 1989;244 (4907) 933- 938
PubMed Link to Article
Barkley  AR Attention-deficit/hyperactivity disorder and self-regulation: taking an evolutionary perspective on executive functioning. Baumeister  RFVohs  KDHandbook of Self-Regulation: Research, Theory, and Applications New York, NY Guilford Press2004;
Crick  NRDodge  KA Social information-processing mechanisms in reactive and proactive aggression. Child Dev 1996;67 (3) 993- 1002
PubMed Link to Article
Christakis  DAZimmerman  FJ Media as a public health issue. Arch Pediatr Adolesc Med 2006;160 (4) 445- 446
PubMed Link to Article
Kindig  DStoddart  G What is population health? Am J Public Health 2003;93 (3) 380- 383
Link to Article

Figures

Tables

Table Graphic Jump LocationTable 1. Standardized Regression Coefficients Reflecting the Relationship Between Baseline Child Characteristics and Televiewing at 29 and 53 Months
Table Graphic Jump LocationTable 2. Standardized Regression Coefficients Reflecting the Relation Between Preschool Televiewing and Teacher-reported Academic Adjustment in the Fourth Grade
Table Graphic Jump LocationTable 3. Standardized Regression Coefficients Reflecting the Relation Between Preschool Televiewing and Parent Reports of Sedentary Habits in the Fourth Grade
Table Graphic Jump LocationTable 4. Standardized Regression Coefficients Reflecting the Relation Between Preschool Televiewing and Fourth-Grade Measures of Body Mass Index and Dietary Intake

References

American Academy of Pediatrics; Committee on Public Education, American Academy of Pediatrics: children, adolescents, and television. Pediatrics 2001;107 (2) 423- 426
PubMed Link to Article
Funk  JBBrouwer  JCurtiss  K McBroom  E Parents of preschoolers: expert media recommendations and ratings knowledge, media-effects beliefs, and monitoring practices. Pediatrics 2009;123 (3) 981- 988
PubMed Link to Article
Certain  LKKahn  RS Prevalence, correlates, and trajectory of television viewing among infants and toddlers. Pediatrics 2002;109 (4) 634- 642
PubMed Link to Article
Villani  S Impact of media on children and adolescents: a 10-year review of the research. J Am Acad Child Adolesc Psychiatry 2001;40 (4) 392- 401
PubMed Link to Article
Jordan  AB Exploring the impact of media on children: the challenges that remain. Arch Pediatr Adolesc Med 2006;160 (4) 446- 448
PubMed Link to Article
Anderson  DRHuston  ACSchmitt  KLinebarger  KLWright  JC Early childhood television viewing and adolescent behavior: the recontact study. Monogr Soc for Child Dev 2001;66 (1) I-VII, 1- 47
PubMed Link to Article
Brady  SSMatthews  KA Effects of media violence on health-related outcomes among young men. Arch Pediatr Adolesc Med 2006;160 (4) 341- 347
PubMed Link to Article
Bushman  BJHuesmann  LR Short-term and long-term effects of violent media on aggression in children and adults. Arch Pediatr Adolesc Med 2006;160 (4) 348- 352
PubMed Link to Article
Bickham  DSRich  M Is television viewing associated with social isolation? roles of exposure time, viewing context, and violent content. Arch Pediatr Adolesc Med 2006;160 (4) 387- 392
PubMed Link to Article
Valkenburg  PMVan der Voort  THA Influence of TV on daydreaming and creative imagination: a review of research. Psychol Bull 1994;116 (2) 316- 339
PubMed Link to Article
Earles  KAAlexander  RJohnson  MLiverpool  J McGhee  M Media influences on children and adolescents: violence and sex. J Natl Med Assoc 2002;94 (9) 797- 801
PubMed
Andersen  RECrespo  CJBartlett  SJCheskin  LJPratt  M Relationship of physical activity and television watching with body weight and level of fatness among children: results from the Third National Health and Nutrition Examination Study. JAMA 1998;279 (12) 938- 942
PubMed Link to Article
Boynton-Jarrett  RThomas  TNPeterson  KEWiecha  JSobol  AMGortmaker  SL Impact of television viewing patterns on fruit and vegetable consumption among adolescents. Pediatrics 2003;112 (6, pt 1) 1321- 1326
PubMed Link to Article
Chamberlain  LJWang  YRobinson  TN Does children's screen time predict requests for advertised products? cross-sectional and prospective analyses. Arch Pediatr Adolesc Med 2006;160 (4) 363- 368
PubMed Link to Article
Dalton  MASargent  JDBeach  ML  et al.  Effect of viewing smoking in movies on adolescent smoking initiation: a cohort study. Lancet 2003;362 (9380) 281- 285
PubMed Link to Article
Robinson  TN Does television cause childhood obesity? JAMA 1998;279 (12) 959- 960
PubMed Link to Article
Sargent  JDBeach  MLDalton  MA  et al.  Effect of parental R-rated movie restriction on adolescent smoking initiation: a prospective study. Pediatrics 2004;114 (1) 149- 156
PubMed Link to Article
Borzekowski  DLGRobinson  TN The remote, the mouse, and the No. 2 pencil: the household media environment and academic achievement among third grade students. Arch Pediatr Adolesc Med 2005;159 (7) 607- 613
PubMed Link to Article
Hancox  RJMilne  BJPoulton  R Association of television viewing during childhood with poor educational achievement. Arch Pediatr Adolesc Med 2005;159 (7) 614- 618
PubMed Link to Article
Sharif  ISargent  JD Association between television, movie, and video game exposure and school performance. Pediatrics 2006;118 (4) 1061- 1070
Link to Article
Duncan  GJDowsett  CJClaessens  A  et al.  School readiness and later achievement. Dev Psychol 2007;43 (6) 1428- 1446
PubMed Link to Article
Mistry  KBMinkovitz  CSStrobino  DMBorzekowski  DLG Children's television exposure and behavioral and social outcomes at 5.5 years: does timing of exposure matter? Pediatrics 2007;120 (4) 762- 769
PubMed Link to Article
Christakis  DAZimmerman  FJDiGiuseppe  DL McCarty  CA Early television exposure and subsequent attentional problems in children. Pediatrics 2004;113 (4) 708- 713
PubMed Link to Article
Zimmerman  FJChristakis  DA Children's television viewing and cognitive outcomes: a longitudinal analysis of national data. Arch Pediatr Adolesc Med 2005;159 (7) 619- 625
PubMed Link to Article
Dobkin  PLTremblay  REMasse  LCVitaro  F Individual and peer characteristics in predicting boys' early onset of substance abuse: a seven-year longitudinal study. Child Dev 1995;66 (4) 1198- 1214
PubMed Link to Article
Pagani  LTremblay  REVitaro  FBoulerice  B McDuff  P Effects of grade retention on academic performance and behavioral development. Dev Psychopathol 2001;13 (2) 297- 315
PubMed Link to Article
Tremblay  RELoeber  RGagnon  CCharlebois  PLarivée  SLeBlanc  M Disruptive boys with stable and unstable high fighting behavior patterns during junior elementary school. J Abnorm Child Psychol 1991;19 (3) 285- 300
PubMed Link to Article
Dubois  LGirard  M Early determinants of overweight at 4.5 years in a population-based longitudinal study. Int J Obes (Lond) 2006;30 (4) 610- 617
Link to Article
Epstein  NBBaldwin  LMBishop  DS The McMaster family assessment device. J Marital Fam Ther 1983;9 (2) 171- 180
Link to Article
Alp  IE Measuring the size of working memory in very young children: the imitation sorting task. de Ribaupierre  ADevelopment of Working Memory East Sussex, England Lawrence Erlbaum Associates1994;
Schafer  JL Multiple imputation: a primer. Stat Methods Med Res 1999;8 (1) 3- 15
PubMed Link to Article
Shonkoff  JPedPhillips  DAed From Neurons to Neighbourhoods: The Science of Early Childhood Development.  Washington, DC National Academy Press2006;
Piaget  JInhelder  B The Child's Conception of Space.  London, England Routledge & Kegan Paul1956;
Thakkar  RRGarrison  MMChristakis  DA A systematic review for the effects of television viewing by infants and preschoolers. Pediatrics 2006;118 (5) 2025- 2031
PubMed Link to Article
Erik Landhuis  CPoulton  RWelch  DHancox  RJ Programming obesity and poor fitness: the long-term impact of childhood television. Obesity (Silver Spring) 2008;16 (6) 1457- 1459
PubMed Link to Article
Pagani  LFitzpatrick  CFJanosz  MArchambault  I School readiness and later achievement: a French Canadian replication and extension. Dev Psychol In press
Fredricks  JABlumenfeld  PCParis  AH School engagement: potential of the concept, state of the evidence. Rev Educ Res 2004;74 (1) 59- 109
Link to Article
Duckworth  ALSeligman  MEP Self-discipline outdoes IQ in predicting academic performance of adolescents. Psychol Sci 2005;16 (12) 939- 944
PubMed Link to Article
Blair  CRazza  RP Relating effortful control, executive function, and false belief understanding to emerging math and literacy ability in kindergarten. Child Dev 2007;78 (2) 647- 663
PubMed Link to Article
Kochanska  GMurray  KTHarlan  ET Effortful control in early childhood: continuity and change, antecedents, and implications for social development. Dev Psychol 2000;36 (2) 220- 232
PubMed Link to Article
Mischel  WShoda  YRodriguez  MI Delay of gratification in children. Science 1989;244 (4907) 933- 938
PubMed Link to Article
Barkley  AR Attention-deficit/hyperactivity disorder and self-regulation: taking an evolutionary perspective on executive functioning. Baumeister  RFVohs  KDHandbook of Self-Regulation: Research, Theory, and Applications New York, NY Guilford Press2004;
Crick  NRDodge  KA Social information-processing mechanisms in reactive and proactive aggression. Child Dev 1996;67 (3) 993- 1002
PubMed Link to Article
Christakis  DAZimmerman  FJ Media as a public health issue. Arch Pediatr Adolesc Med 2006;160 (4) 445- 446
PubMed Link to Article
Kindig  DStoddart  G What is population health? Am J Public Health 2003;93 (3) 380- 383
Link to Article

Correspondence

CME
Also Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Please click the checkbox indicating that you have read the full article in order to submit your answers.
Your answers have been saved for later.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.
Submit a Comment

Multimedia

Some tools below are only available to our subscribers or users with an online account.

Web of Science® Times Cited: 32

Related Content

Customize your page view by dragging & repositioning the boxes below.

Articles Related By Topic
Related Collections