Cooper et al. (this issue) develop an interactive activation model of spatial and imitative compatibilities that simulates the key results from Catmur and Heyes (2011) and thus conclude that both compatibilities are mediated by the same processes since their single model can predict all the results. Although the model is impressive, the…

Students enrolled in a single-subject design course studied the repeated acquisition of response sequences by using CHAINS, a QuickBASIC 4.5 program, which runs in DOS or Windows. For about 2 months, students examined the learning of such sequences as a function of various treatments. Each week students graphed their data, discussed their…

This article explores linkages between stress and effective job performance: while too much stress can lead to burnout, too little stressful stimulation can result in boredom. Generating the proper amount of stress for optimal job performance is discussed. (PP)

Describes the establishment of a psychological space for any set of stimuli by determining metric distances between the stimuli with the probability that a response learned for a stimulus will generalize to the other. (Author/TW)

Michael (1975) reviewed efforts to classify reinforcing events in terms of whether stimuli are added (positive reinforcement) or removed (negative reinforcement). He concluded that distinctions in these terms are confusing and ambiguous. Of necessity, adding a stimulus requires its previous absence and removing a stimulus its previous presence.…

Examines the characteristic features of epidemic hysteria reports in school settings. Discovers three distinct symptom patterns: (1) mass motor hysteria (psychomotor alterations due to preexisting stress); (2) mass anxiety hysteria (extreme anxiety following the redefinition of a mundane event); and (3) mass pseudo-hysteria (relabeling of mundane…