A Network Analysis Approach on the Psychological Flexibility/Inflexibility Model.

Area of Science:

• Psychology
• Clinical Psychology
• Behavioral Science

Background:

• Acceptance and Commitment Therapy (ACT) is theorized to operate through six core processes, forming the Psychological Inflexibility/Psychological Flexibility (PI/PF) model.
• The interconnections and theoretical structure of these six components within the PI/PF model require further empirical investigation.
• Network Analysis (NA) offers a robust methodology for examining the complex interrelationships among psychological constructs.

Purpose of the Study:

• To explore the role and associations of the PI/PF model's components using NA.
• To compare the network structure of ACT components across two distinct samples and measurement sets.
• To empirically test the distinctiveness and centrality of the six core ACT processes.

Main Methods:

• Employed Network Analysis (NA) on data from two independent samples (N=501 and N=428).
• Utilized different sets of questionnaires to assess the six components of the PI/PF model in each sample.
• Compared network structures across subsamples and measurement instruments.

Main Results:

• NA did not confirm the six ACT dimensions as entirely distinct components.
• Values and Committed Action consistently emerged as a strongly associated group in both samples.
• Self-as-Context demonstrated a key role, often merging with Present Moment Awareness, while Acceptance and Defusion were less central than expected.
• No significant structural differences were found between the networks across subsamples or scales.

Conclusions:

• The empirical structure of ACT's core processes may be better represented as a triflex rather than a hexaflex.
• Measurement issues or theoretical limitations may explain the lack of distinctiveness among the six ACT components.
• Further research should focus on the critical role of Self-as-Context and refine the theoretical model of ACT processes.