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CONCURRENT SCHEDULES: EFFECTS OF TIME‐ AND RESPONSE‐ALLOCATION CONSTRAINTS
Author(s) -
Davison Michael
Publication year - 1991
Publication title -
journal of the experimental analysis of behavior
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.75
H-Index - 61
eISSN - 1938-3711
pISSN - 0022-5002
DOI - 10.1901/jeab.1991.55-189
Subject(s) - changeover , key (lock) , time allocation , schedule , computer science , response time , reinforcement , time constraint , constraint (computer aided design) , process (computing) , mathematical optimization , mathematics , psychology , telecommunications , transmission (telecommunications) , social psychology , computer security , social science , computer graphics (images) , geometry , sociology , political science , law , operating system
Five pigeons were trained on concurrent variable‐interval schedules arranged on two keys. In Part 1 of the experiment, the subjects responded under no constraints, and the ratios of reinforcers obtainable were varied over five levels. In Part 2, the conditions of the experiment were changed such that the time spent responding on the left key before a subsequent changeover to the right key determined the minimum time that must be spent responding on the right key before a changeover to the left key could occur. When the left key provided a higher reinforcer rate than the right key, this procedure ensured that the time allocated to the two keys was approximately equal. The data showed that such a time‐allocation constraint only marginally constrained response allocation. In Part 3, the numbers of responses emitted on the left key before a changeover to the right key determined the minimum number of responses that had to be emitted on the right key before a changeover to the left key could occur. This response constraint completely constrained time allocation. These data are consistent with the view that response allocation is a fundamental process (and time allocation a derivative process), or that response and time allocation are independently controlled, in concurrent‐schedule performance.