Blaine Peden

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Ideal free distribution theory predicts that foragers will form groups proportional in number to the resources available in alternative resource sites or patches, a phenomenon termed habitat matching. Three experiments tested this prediction with college students in discrete-trial simulations and a free-operant simulation. Sensitivity to differences in(More)
Open and closed economies have been assumed to produce opposite relations between responding and the programmed density of reward (the amount of reward divided by its cost). Experimental procedures that are treated as open economies typically dissociate responding and total reward by providing supplemental income outside the experimental session; procedures(More)
This report describes several evaluation procedures used to assess the effectiveness of a newly-developed introductory computer science curriculum. The authors describe the development of a tool to evaluate changes in student's attitudes toward the computer science discipline. The process used to develop this survey is presented, along with several(More)
This chapter provides readers with a practical guide about how to use commercial Web survey systems for Internet research. The authors frame their approach in terms of stages in the online research process: (1) ideation, (2) implementation, (3) distribution, (4) collection, (5) analysis, (6) dissemination, and (7) retention. Although they focus on(More)
Sprague-Dawley rats (Rattus norvegicus) were observed in a familiar environment. In Experiment 1 a leader entered a clean chamber, and an opposite-sex follower entered the chamber next. Both sexes began to flank mark after several sessions. Males flank marked more, and females locomoted more, but both sexes urine marked and investigated objects equally(More)
An experiment determined whether pigeons minimize number of key pecks per food delivery and maintain their baseline intake of food while key pecking on a three-component chain schedule. Pigeons at either 80% or 100% body weight obtained all their food during baseline and contingency sessions. During baseline sessions, pecks on the left and center keys had(More)
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