Thesis--PlanB (M.S.)--University of Wisconsin--Stout, 2003. / Includes bibliographical references.

Thesis PlanA (M.S.)--University of Wisconsin--Stout, 2008. / Includes bibliographical references.

No description available.

Thesis PlanB (M.S.)--University of Wisconsin--Stout, 2008. / Includes bibliographical references.

Thesis (Ph. D.)--University of California, San Diego and San Diego State University, 2002. / Vita. Includes bibliographical references (leaves 242-255).

Thesis PlanA (M.S.)--University of Wisconsin--Stout, 2008. / Includes bibliographical references.

Thesis (M.S.)--Eastern Illinois University, 2008. / Includes bibliographical references (leaves 44-48).

Thesis (Ph. D.)--Duke University, 2008.

This cross-sectional study examined the relationships between length of residence in the United States (U.S.) and dietary and physical activity acculturation, and the relationships between dietary and physical activity acculturation and weight status in 55 Chinese college students. Length of residence in the U.S. was positively associated with larger portion size, greater amount of physical activity, and change in BMI in male participants. Adoption of a Western diet was associated with weight gain. Portion size change was positively associated with BMI change. Lunch size change was positively correlated with BMI change in males while negatively correlated with BMI change in females. And dinner size change was positively correlated with BMI change in males. This study suggests that dietary acculturation is positively associated with weight gain in Chinese college students. Future interventions focusing on multi-dimensional aspects of dietary behavior change--especially portion size and meal size changes--while emphasizing the importance of changes in physical activity are needed. Such interventions may help maintain healthy weight status and prevent individuals in this population from becoming overweight or obese.

The effect of portion size on food intake is a well-documented phenomenon: when served larger portions, individuals significantly increase their food intake. Insofar authors have limited their research on presenting the potential outcomes, while identifying several conditions favorable to this phenomenon. Indeed, the mechanisms of this effect are poorly understood and no research has insofar provided conclusive evidence regarding the underlying mechanism that could help explain the portion size effect. The first part of this dissertation aimed to fill this gap. We argue that the anchoring and adjustment heuristic accounts for most of the favoring conditions evidenced in earlier research and present it as a possible mechanism underlying the portion size effect. In this view, the portion size served is used as an anchor whereas other influences (i.e. economical, metabolic, regulatory, physiological, sensory, social and environmental) may further contribute to adjust total amount of food consumed. Moreover, we argue that prevention strategies based on this decision making literature may be similarly effective to limit excess food intake from enlarged portions. <p><p>The second and third chapter of this dissertation focus on two other factors related to the portion size of foods, namely the container size and the structure of the portion (i.e. food item size). The discussion of this dissertation reviews the facilitating conditions put forward previously to understand the portion size effect, as well as those reinforcing this effect, and how they may be integrated in an anchoring and adjustment perspective of eating. Finally, it aims to provide a food intake model that may accommodate for most environmental influences, with a special focus on the three influences mentioned above. / Doctorat en Sciences Psychologiques et de l'éducation / info:eu-repo/semantics/nonPublished