AbstractData obtained from four groups of human Ss suggest that general concepts of stimulus identity and distinctness are learned from discrimination tasks involving few or many exemplars of these concepts.Get full access to this articleView all access options for this article.Get accessReferences1. Goldstein M. Weber R. J. Contingent discrimination in humans. Percept. mot. Skills, 1965, 21, 171–176.2. Lovejoy E. Manley M. B. Goldstein M. Individual differences in the performance of a discrimination task. Percept. mot. Skills, 1966, 22, 195–199.