Abstract
Background
The Information-Motivation-Behavioral Skills (IMB) model often guides sexual risk reduction programs even though no studies have examined covariation in the theory’s constructs in a dynamic fashion with longitudinal data.
Purpose
Using new developments in latent growth modeling, we explore how changes in information, motivation, and behavioral skills over 9 months relate to changes in condom use among STD clinic patients.
Methods
Participants (N = 1281, 50% female, 66% African American) completed measures of IMB constructs at three time points. We used parallel process latent growth modeling to examine associations among intercepts and slopes of IMB constructs.
Results
Initial levels of motivation, behavioral skills, and condom use were all positively associated, with behavioral skills partially mediating associations between motivation and condom use. Changes over time in behavioral skills positively related to changes in condom use.
Conclusions
Results support the key role of behavioral skills in sexual risk reduction, suggesting these skills should be targeted in HIV prevention interventions.
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Notes
Because Mplus does not allow for the calculation of standardized, bootstrapped confidence intervals for covariances, this confidence interval was calculated by hand using the MLR standardized standard errors.
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Conflict of Interest Statement
The authors have no conflict of interest to disclose.
Funding
This study was supported by grant R01-MH068171 from the Center for Mental Health Research on AIDS, National Institute of Mental Health to Michael P. Carey.
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Walsh, J.L., Senn, T.E., Scott-Sheldon, L.A.J. et al. Predicting Condom Use Using the Information-Motivation-Behavioral Skills (IMB) Model: A Multivariate Latent Growth Curve Analysis. ann. behav. med. 42, 235–244 (2011). https://doi.org/10.1007/s12160-011-9284-y
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DOI: https://doi.org/10.1007/s12160-011-9284-y