A four-item unipolar scale measuring the subjective sense of confidence a person has in their thoughts, judgments, or responses — particularly in attitude or evaluation contexts. Items use single adjective descriptors (confident, certain, valid, sure) to capture the metacognitive certainty dimension of judgment quality. Originally applied to measure confidence in cognitive responses to advertising stimuli, the scale is broadly applicable wherever attitude certainty or response confidence is a theoretically relevant variable.
Briñol, Pablo, Richard E. Petty, and Zakary L. Tormala (2004). Self-validation of cognitive responses to advertisements. Journal of Consumer Research, 30(4), 559–573.
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