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In this stuc the transtheoretical model for behavior dian was implied to the consumption of fruits, vegetables, and grain products among youi aduhs. The critenon behavior was the consuAipuun of the recommended number of servings described in the United States Department of A^cuhure Food Guide Pyramid. Three major constructs—stages of consun^on, decisional balance, and self-efficacy—were used. Specific objectives were: develop and validate an instrument to measure the three constructs; use it to measure consumption for fruits, vegetables, and grain products among your aduhs; examine relationships among the three constructs and amoi all variables; make recommendations for nutrition education and research. Measurii scales were developed for the decisional balance and self-efficacy portion of the insQument. A stage of consumption a^orithm was used to assess the st^es of consumption. From 800 surveys mailed to a randomfy* selected sample of young aduhs, 18 to 24 years old, 116 usable (14.5%) questionnaires were returned. Factor and reliabili anafyses were conduaed to assess the psychometric properties of the instrument. Decisional balance emerged as two faaors— the positive and negative perceptions of increasing consumption. Self-efficacy emerged as one general faaor. Confirmatory factor analysis indices indicate the data fit the hypothesized model adequate^ for the three food groups (AGFI >0.80). The instrument exhibited moderate to excellent internal consistenqr for perceived advantages (a = 0.47 to 0.63), perceived disadvantages (ot> 0.70), and self-efficacy scales ((*> 0.88). The results of multivariate analysis of variance indicate that decisional balance and self-efficacy scores differ as stages of consunq>tion change. The perceived advantages and self-efficacy scores increased while scores on perceived disadvantages decreased from precontenqilation to maintenance stages with the exception of the action st^e for fiiiits and grain products. At the action stage.

Application of the transtheoretical model of behavior change to consumption of fruits, vegetables, and grain products among young adults