Predicting safe sex: Assessment of autoregressive and cross-lagged effects within the Theory of Planned Behavior

S.M. Eggers*, M. Taylor, R. Sathiparsad, Arjan Bos, H. de Vries

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


Despite its popularity, few studies have assessed the temporal stability and cross-lagged effects of the Theory of Planned Behavior factors: Attitude, subjective norms and self-efficacy. For this study, 298 adolescent learners from KwaZulu-Natal, South Africa, filled out a Theory of Planned Behavior questionnaire on teenage pregnancy at baseline and after 6 months. Structural equation modeling showed that there were considerable cross-lagged effects between attitude and subjective norms. Temporal stability was moderate with test-retest correlations ranging from 0.37 to 0.51 and the model was able to predict intentions to have safe sex (R-2 = 0.69) Implications for practice and future research are discussed.

Original languageEnglish
Pages (from-to)1397-1404
Number of pages8
JournalJournal of Health Psychology
Issue number11
Early online date1 Dec 2013
Publication statusPublished - Nov 2015


  • cross-lagged effects
  • KwaZulu-Natal
  • teenage pregnancy
  • temporal stability
  • Theory of Planned Behavior

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