title: Self-efficacy moderates the mediation of intentions into behavior via plans.
abstract: OBJECTIVE
  To examine the putative moderating role of self-efficacy in the intention-planning-behavior relationship.
  
  
  METHODS
  In N=812 individuals, intentions (independent variable) were assessed at baseline, whereas action plans (mediator), self-efficacy (moderator), and physical activity (dependent variable) were measured again 4 weeks later. We examined a moderated-mediation model.
  
  
  RESULTS
  Self-efficacy moderates the mediation process: the strength of the mediated effect increased along with levels of self-efficacy. The results remain valid after accounting for baseline physical activity.
  
  
  CONCLUSIONS
  For plans to mediate the intention-behavior relation, people must hold sufficiently high levels of self-efficacy. If they lack self-efficacy, planning may be in vain.
authors.affiliation: Freie Universität Berlin, Berlin, Germany. s.lippke@fu-berlin.de
authors.forename: Sonia
authors.initials: S
authors.lastname: Lippke
authors.forename: Amelie U
authors.initials: AU
authors.lastname: Wiedemann
authors.forename: Jochen P
authors.initials: JP
authors.lastname: Ziegelmann
authors.forename: Tabea
authors.initials: T
authors.lastname: Reuter
authors.forename: Ralf
authors.initials: R
authors.lastname: Schwarzer
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015444:Exercise / Q000523:psychology*; D005260:Female; D015438:Health Behavior; D006801:Humans; D008297:Male; D008875:Middle Aged; D009042:Motivation; D020377:Self Efficacy