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. 2018 Oct 1;40(5):259-268.
doi: 10.1123/jsep.2018-0043. Epub 2018 Nov 7.

The Need-Relevant Instructor Behaviors Scale: Development and Initial Validation

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The Need-Relevant Instructor Behaviors Scale: Development and Initial Validation

Eleanor Quested et al. J Sport Exerc Psychol. .

Abstract

Purpose: This article outlines the development and validation of the Need-Relevant Instructor Behaviors Scale (NIBS). Drawing from self-determination theory, the NIBS is the first observation tool designed to code the frequency and the intensity of autonomy-, competence-, and relatedness-relevant behaviors of exercise instructors. The scale also captures the frequency of need-indifferent behaviors.

Methods: The behaviors of 27 exercise instructors were coded by trained raters on two occasions, before and after they received training in adaptive motivational communication.

Results: Findings supported the structural validity and reliability of the scale. The scale's sensitivity to detect changes in frequency and intensity of need-relevant behaviors was also evidenced.

Conclusions: The NIBS is a new tool that offers a unique, tripartite assessment of need-relevant behaviors of leaders in the physical activity domain.

Keywords: exercise; motivation; need support; need thwarting; observation; self-determination theory.

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