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Erjavec, Mihela; Lovett, Victoria E.; Horne, Pauline J. – Journal of the Experimental Analysis of Behavior, 2009
The determinants of generalized imitation of manual gestures were investigated in 1- to 2-year-old infants. Eleven infants were first trained eight baseline matching relations; then, four novel gestures that the infants did not match in probe trials were selected as target behaviors. Next, in a generalized imitation test in which matching…
Descriptors: Infants, Nonverbal Communication, Imitation, Reinforcement
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Grace, Randolph C.; McLean, Anthony P. – Journal of the Experimental Analysis of Behavior, 2006
Pigeons' choice in concurrent chains can adapt to rapidly changing contingencies. Grace, Bragason, and McLean (2003) found that relative initial-link response rate was sensitive to the immediacy ratio in the current session when one of the terminal-link fixed-interval schedules was changed daily according to a pseudorandom binary sequence (e.g.,…
Descriptors: Animals, Selection, Change, Adjustment (to Environment)
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Tomanari, Gerson Y.; Sidman, Murray; Rubio, Adriana R.; Dube, William V. – Journal of the Experimental Analysis of Behavior, 2006
Five adult humans were tested for emergent conditional discriminations under rapid-responding contingencies. During four-comparison matching-to-sample baseline training (AB and AC), limited-hold contingencies for responding to samples and comparisons were gradually restricted to the shortest duration consistent with at least 95% accuracy and no…
Descriptors: Foreign Countries, Higher Education, Staff Utilization, Undergraduate Students