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General Decision-Making Style (GDMS, Scott & Bruce)
Psychology: Cognition & EducationReliability: alphas 0.74–0.85 across 5 styles3 sample items
About this scale
A 25-item measure of five decision-making styles: rational, intuitive, dependent, avoidant, and spontaneous (5 items each).
Sample item(s)
“I make decisions in a logical and systematic way (rational)”
“When making decisions, I rely upon my instincts (intuitive)”
“I avoid making important decisions until the pressure is on (avoidant)”
Reliability
Reported internal consistency: alphas 0.74–0.85 across 5 styles. As a rule of thumb, Cronbach’s α ≥ .70 is considered acceptable, ≥ .80 good, and ≥ .90 excellent for established measures.
Notes
Free for academic use.
Source & citation
Scott, S. G., & Bruce, R. A. (1995): Decision-making style: The development and assessment of a new measure. Educational and Psychological Measurement, Vol. 55, No. 5, pp. 818–831.
Source. Scale details are summarised from the publication cited above. Always consult the original source for the full item set, scoring, and permission to use.
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