Detection and discrimination of complex sounds by pigeons (Columba livia).

Auditory scene analysis is the process by which sounds are separated and identified from each other and from the background to make functional auditory objects. One challenge in making these psychological units is that complex sounds often continuously differ in composition over their duration. Here we examined the acoustic basis of complex sound processing in four pigeons by evaluating their performance in an ongoing same/different (S/D) task.

The aha effect in groups and other dynamic learning contexts.

The aha effect is a memory advantage for initially ambiguous stimuli (e.g., "The notes were sour because the seam split.

Infants' Preferences for Familiarity and Novelty During the Course of Visual Processing.

At 4 1/2 months, infants were shown a series of brief choice trials between a stimulus that always remained the same and another that was different on every trial. The point when a consistent preference for the novel stimulus commenced was identified for each infant, and their preferences for the familiar and novel stimuli in trials preceding that point were examined. Infants who saw objects or faces as stimuli both exhibited selective attention to the familiar stimulus prior to preferring novel stimuli, although infants shown kaleidoscope patterns did not.

Assessment of shame and guilt and their relationships to psychopathology.

Two studies are reported. First, we tested the previously validated Personal Feelings Questionnaire-2 (PFQ2; Harder & Zalma, 1990) shame and guilt measure and the Adapted Shame and Guilt Scale (ASGS; Hoblitzelle, 1982) Shame subscale against the newly introduced Self-Conscious Affect and Attribution Inventory (SCAAI; Tangney, 1990) for shame and guilt dispositions. Fifty-nine college undergraduates completed randomly ordered personality inventories reflecting constructs theoretically relevant to the presence of shame and guilt proneness.