選択行動と強化の遅延時間 : 初環効果と終環の弁別過程

概要

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Five pigeons were exposed to concurrent-chains schedules in which the terminal links were 3 pairs of fixed-time (FT) schedules while length of equal variable-interval (VI) schedules in the initial links were varied across conditions. Choice proportions for conditions of relatively short delay pairs increased as the length was shortened, confirming "initial-link effect". Subsequently, 2 of these 5 subjects were exposed to different types of the terminal-link schedule (FT, fixed-interval (FI), VI, and variable-time (VT) schedules) by using constant values of both the terminal-link delays and the length in the initial links. Although no systematic correspondence was found between relative rate of responding in the terminal links and choice proportions for VI and VT conditions, discrimination of the terminal-link shedules was found for FT and FI conditions by showing that FI scallop developed in those conditions. These results support implications of the delay-reduction hypothesis proposed by Fantino (1969).
日本基礎心理学会の論文
1991-03-31