The present study focused on identifying the generality of decision-making and whether preceding judgement accuracy and confidence were significant predictors of such behaviour. 116 undergraduate psychology students completed four cognitive ability tests and a personality questionnaire. All items were accompanied with confidence ratings and the decision to accept or reject ones answer. A consistent pattern of positive intercorrelations between decision-making indices suggested a more general decision-making factor. That is, despite some sensitivity to varying cognitive requirements, individuals demonstrated consistent tendencies to accept or reject their answers, relative to others. General Accuracy and Confidence factors also emerged and, after controlling for each other, were positively related to these general tendencies. Personality was not a consistent predictor of any indices. Implications are that individual differences in decision-making exist and are somewhat accounted for by stable differences in Ability and Confidence.
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