The Theory of Planned Behavior Within the Stages of the Transtheoretical Model: Latent Structural Modeling of Stage-Specific Prediction Patterns in Physical Activity |
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| Authors: | Sonia Lippke Claudio R Nigg Jay E Maddock |
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| Institution: | 1. Department of Health Psychology , Freie Universitaet Berlin;2. Department of Public Health Sciences , John A. Burns School of Medicine, University of Hawaii , Manoa |
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| Abstract: | This is the first study to test whether the stages of change of the transtheoretical model are qualitatively different through exploring discontinuity patterns in theory of planned behavior (TPB) variables using latent multigroup structural equation modeling (MSEM) with AMOS. Discontinuity patterns in terms of latent means and prediction patterns for the different stage groups were examined. Adults (n = 3,462) were assessed on their physical activity stages of change and TPB variables. The TPB was separately examined within the five stage groups. The TPB measurement model fit was acceptable. Latent mean analyses with post-hoc contrast and MSEM indicated discontinuity patterns. Results underscore the qualitative differences between the stages that may guide further research and the design of interventions integrating the approaches. |
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| Keywords: | full information maximum likelihood longitudinal missing data multilevel analysis multiple imputation |
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