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April 3, 2026Journal of Contextual Behavioral ScienceOpen Access

Testing the network centrality hypothesis within process-based acceptance and commitment therapy – A single case experiment utilizing perceived causal networks

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Authors

ALAmani LavefjordFSF.T.A. SundströmAHA. Hammar

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Overview

Single case experiment tests centrality hypothesis in psychological treatment, suggesting promising but varying personalization methods.

Key Points

  • The aim was to test the centrality hypothesis in psychological treatment using the most central node for interventions.
  • Conducted a single case design with multiple baselines involving six participants.
  • Assessed perceived causal networks (PECAN) to guide treatment decisions.
  • Applied randomization to determine the order of interventions based on network centrality.
  • All participants showed at least one positive outcome change as predicted by the centrality hypothesis.
  • Contradictory outcomes were observed in two participants.
  • The approach of matching interventions to the most central node shows potential but may not be universally effective.

Cite This Study

Lavefjord et al. (2026) studied this question.

synapsesocial.com/papers/69cf5ebc5a333a821460d48ahttps://doi.org/10.1016/j.jcbs.2026.100997
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