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. 2017 Jun;52(6):863-871.
doi: 10.1016/j.amepre.2017.01.011.

Autonomous Motivation and Fruit/Vegetable Intake in Parent-Adolescent Dyads

Laura A Dwyer  1 , Niall Bolger  2 , Jean-Philippe Laurenceau  3 , Heather Patrick  4 , April Y Oh  5 , Linda C Nebeling  5 , Erin Hennessy  6
Affiliations

Autonomous Motivation and Fruit/Vegetable Intake in Parent-Adolescent Dyads

Laura A Dwyer et al. Am J Prev Med. 2017 Jun.

Abstract

Introduction: Autonomous motivation (motivation to engage in a behavior because of personal choice, interest, or value) is often associated with health behaviors. The present study contributes to research on motivation and eating behaviors by examining (1) how autonomous motivation is correlated within parent-adolescent dyads and (2) whether parent- and adolescent-reported autonomous motivation predicts the parent-adolescent correlation in fruit and vegetable (FV) intake frequency.

Methods: Data were drawn from the Family Life, Activity, Sun, Health, and Eating (FLASHE) Study, a cross-sectional U.S. survey of parent-adolescent dyads led by the National Cancer Institute and fielded between April and October 2014. In 2016, data were analyzed from dyads who had responses on a six-item self-report measure of daily frequency of FV consumption and a two-item self-report measure of autonomous motivation for consuming FVs.

Results: Parents' and adolescents' reports of autonomous motivation and FV intake frequency were positively correlated. Both parents' and adolescents' autonomous motivation predicted higher levels of their own FV intake frequency and that of their dyad partner (p-values ≤0.001). These effects of autonomous motivation explained 22.6% of the parent-adolescent correlation in FV intake frequency. Actor effects (one's motivation predicting their own FV intake frequency) were stronger than partner effects (one's motivation predicting their partner's FV intake frequency).

Conclusions: Parent-adolescent similarity in autonomous motivation for healthy eating may contribute to similarity in eating behaviors. Future research should further examine how individual-level health behavior correlates influence health behaviors within dyads.

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Figures

Figure 1
Figure 1
Actor-partner interdependence model predicting FV from autonomous motivation. Note: Standardized parameter estimates from MPlus are shown first (followed by unstandardized parameter estimates in parentheses). Paths from the control variables to both the predictors and outcomes were estimated and are shown in Table 3. Boldface indicates statistical significance (p≤0.001). FV, fruit and vegetable
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