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Introduction <p>The Self-Report Behavioural Automaticity Index (SRBAI) features automaticity-related items of the Self-Report Habit Index (SRHI) and is the most widely used instrument to assess habit strength. The aim of the present investigation was to validate the German SRBAI (SRBAI-G) in the context of physical activity (PA) and to re-evaluate the use of the German Self-Report Habit Index (SRHI-G).</p> Methods <p>Two online surveys with convenience samples of young adults (<i>N</i><sub>1</sub> = 267, <i>N</i><sub>2</sub> = 334) were conducted to evaluate the reliability (internal consistency and test-retest reliability) and validity (factorial, convergent and discriminant) of habit strength measures. Study&#xa0;1 took all items of the SRHI‑G to re-evaluate its presumed factorial structure in the context of vigorous PA. Study&#xa0;2 examined the SRBAI‑G in three PA contexts. In both studies, the frequency and duration of PA were assessed through self-report.</p> Results <p>The SRBAI‑G proved to be a&#xa0;reliable and valid instrument for measuring behavioural automaticity in the context of PA. For the SRHI‑G, a&#xa0;three-factorial model was shown to be superior to a&#xa0;single-factor solution but not acceptable regarding the cut-off values set forth by Hu and Bentler (<CitationRef CitationID="CR28">1999</CitationRef>).</p> Discussion <p>In comparison to the SRHI‑G, the SRBAI‑G is more closely aligned with current habit definitions and meets conventional psychometric quality benchmarks in the context of PA. More research is needed to clarify whether automaticity assessed by available self-report measures can generally tackle changes in habit formation or disruption.</p>

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Measuring habit strength in physical activity: Re-evaluation of the German Self-Report Habit Index and validation of the German version of the Self-Report Behavioural Automaticity Index

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  • 发表日期：

    2025年6月26日

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  • Phil Ljubic,
  • Benedikt Broda,
  • Sabine Windmann,
  • Chris Englert

摘要

Introduction

The Self-Report Behavioural Automaticity Index (SRBAI) features automaticity-related items of the Self-Report Habit Index (SRHI) and is the most widely used instrument to assess habit strength. The aim of the present investigation was to validate the German SRBAI (SRBAI-G) in the context of physical activity (PA) and to re-evaluate the use of the German Self-Report Habit Index (SRHI-G).

Methods

Two online surveys with convenience samples of young adults (N1 = 267, N2 = 334) were conducted to evaluate the reliability (internal consistency and test-retest reliability) and validity (factorial, convergent and discriminant) of habit strength measures. Study 1 took all items of the SRHI‑G to re-evaluate its presumed factorial structure in the context of vigorous PA. Study 2 examined the SRBAI‑G in three PA contexts. In both studies, the frequency and duration of PA were assessed through self-report.

Results

The SRBAI‑G proved to be a reliable and valid instrument for measuring behavioural automaticity in the context of PA. For the SRHI‑G, a three-factorial model was shown to be superior to a single-factor solution but not acceptable regarding the cut-off values set forth by Hu and Bentler (1999).

Discussion

In comparison to the SRHI‑G, the SRBAI‑G is more closely aligned with current habit definitions and meets conventional psychometric quality benchmarks in the context of PA. More research is needed to clarify whether automaticity assessed by available self-report measures can generally tackle changes in habit formation or disruption.