Identifying the Determinants of (Non-)Replicability: The Theory of Planned Behavior

October 17, 2018 – October 19, 2018

organized by the Leibniz Institute for Psychology Information (ZPID)
Event location: University of Trier, Building P, Room P 12


An associated special issue will appear in 2020 in Europe's Journal of Psychology.
For further details, see:

The overall aim of this conference is to present and to discuss contributions aimed at empirically identifying the factors rendering psychological theories replicable. Because of the large number of replications available, having resulted in more than 40 meta-analytic syntheses, the focus will be on the theory of planned behavior (TPB; Ajzen, 1985, 1991, 2012). Tentative schedule:

Day 1 (October 17, 2018, starting at 10:00 am):
The Theory of Planned Behavior: Past, present and future

  • Keynote talk by Icek Ajzen, University of Amherst:
    Doing the Same Thing Over and Over Again and Expecting Different Results:  Replication in the Theory of Planned Behavior”

  • Talks about recent applications of the TPB by:

    • Francesco La Barbera, Federico II University of Naples:
      “Control interactions in the theory of planned behavior”

    • Jost Reinecke, University of Bielefeld:
      “Applications of the theory of planned behavior (TPB) and the situational action theory (SAT) in the context of criminological research”

    • Martin S. Hagger, Curtin University and University of Jyväskylä:
      “Testing the Theory of Planned Behavior and Reasoned Action Approach: A Meta-Analytic Structural Equation Modeling Approach”

  • Keynote talk by Peter Schmidt, University of Giessen:
    “Meta-analyses of the theory of planned behavior”


Day 2 (October 18, 2018):

Workshop given by Icek Ajzen and Peter Schmidt

  • Central features of the TPB:  The principle of compatibility; interaction and mediation assumptions.

  • Using SEM to establish convergent and discriminant validity of TPB measures; measurement invariance.

  • SEM test of the structural model: mediation, moderation and changes over time.

  • The TPB as a framework for behavior change interventions.  Results from meta-analyses.

  • Using SEM to assess the impact of an intervention.  Mimic Models and Multiple Group SEM


Day 3 (October 19, 2018, until 12:00 pm):
Theory of Planned Behavior Hackathon

Please bring your own computer to participate in the hackathon!

  • Developing pre-registered replications of past primary studies applying the TPB to any substantive domain identifying the conditions that promote or inhibit replicability of findings.

  • Developing pre-registered systematic reviews and meta-analytic syntheses of TPB studies identifying the determinants of the (non-)replicability of the TPB.


A detailed conference program including the scheduled talks and sessions is now available:

Conference Program


Registration fees

Registration is free of charge for employees of ZPID and for students/employees of the University of Trier. Please request a registration voucher by e-mail ( ).

For all other participants, the following rates apply:

Early Bird (until Sept 20, 2018): 150 EUR

Regular (Sept 21 until Oct 3, 2018): 200 EUR

Late (Oct 4 until Oct 10, 2018): 350 EUR

Conference Information

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