The sensory sampling model (SESAM, P. Juslin & H. Olsson, 1997) accounts for the underconfidence observed in sensory discriminations with pair-comparisons. In the present study the model is applied to a single-stimulus task and a comparison is made with pair- comparisons. The model predicts that in the single-stimulus condition training with feedback should lead to poorer calibration with more underconfidence. In pair-comparison the feedback should have little or no effect on calibration. The results confirm these predictions.
