Quantum mechanics

Nomological network

Test validity

Scale (ratio)

Biology

Statistics

Social psychology

Factorial analysis

Power (physics)

Deci-

Psychometrics

Validity

Structural equation modeling

Paleontology

Physics

Test (biology)

Confirmatory factor analysis

Intrinsic motivation

Psychology

Mathematics

External validity

Political science

Reliability (semiconductor)

Autonomy

Self-determination theory

Clinical psychology

Criterion validity

Amotivation

Internal consistency

Journal of Sport and Exercise Psychology

The purpose of the four studies described in this article was to develop and test a new measure of competitive sport participants’ intrinsic motivation, extrinsic motivation, and amotivation (self-determination theory; Deci &amp; Ryan, 1985). The items for the new measure, named the Behavioral Regulation in Sport Questionnaire (BRSQ), were constructed using interviews, expert review, and pilot testing. Analyses supported the internal consistency, test–retest reliability, and factorial validity of the BRSQ scores. Nomological validity evidence was also supportive, as BRSQ subscale scores were correlated in the expected pattern with scores derived from measures of motivational consequences. When directly compared with scores derived from the Sport Motivation Scale (SMS; Pelletier, Fortier, Vallerand, Tuson, &amp; Blais, 1995) and a revised version of that questionnaire (SMS-6; Mallett, Kawabata, Newcombe, Otero-Forero, &amp; Jackson, 2007), BRSQ scores demonstrated equal or superior reliability and factorial validity as well as better nomological validity.

The Behavioral Regulation in Sport Questionnaire (BRSQ): Instrument Development and Initial Validity Evidence