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Development and validation of the relational depth frequency scale.

Gina Di Malta1, Chris Evans2, Mick Cooper3

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Summary

A new six-item Relational Depth Frequency Scale (RDFS) effectively measures profound moments in therapy for both clients and therapists. This brief tool aids in understanding the link between relational depth and therapeutic success.

Keywords:
measurementrelational depthscale developmenttherapeutic alliancetherapist—patient relationship

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Area of Science:

  • Psychology
  • Psychotherapy Research

Background:

  • Relational depth is crucial for therapeutic outcomes.
  • Existing measures may not capture the frequency of profound moments in therapy.

Purpose of the Study:

  • To develop and validate a brief self-report measure, the Relational Depth Frequency Scale (RDFS), to assess the frequency of profound contact in psychotherapy.

Main Methods:

  • Item generation and refinement through Three-Step Test Interviews.
  • Psychometric assessment of 16 items in an online sample of therapists and clients.
  • Scale shortening using confirmatory factor analysis (CFA) and Rasch analysis.

Main Results:

  • A six-item RDFS was developed and validated in independent subsamples.
  • The RDFS demonstrated good internal consistency (Cronbach's α = .85-.93) and acceptable fit statistics.
  • Convergent validity was supported by correlations with the Working Alliance Inventory and Relational Depth Inventory (RDI-R2).

Conclusions:

  • The RDFS is a brief, reliable, and valid measure for assessing relational depth frequency in psychotherapy.
  • It can be used to explore the relationship between relational depth and therapeutic outcomes.
  • Further research is recommended to confirm its utility in clinical settings.