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The Need-Relevant Instructor Behaviors Scale: Development and Initial Validation
Eleanor Quested1, Nikos Ntoumanis1, Andreas Stenling2
11 Curtin University.
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.
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