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Variable interval schedule: Reinforcement occurs following the first response after a variable time has elapsed from the previous reinforcement. This schedule typically yields a relatively steady rate of response that varies with the average time between reinforcements.
The matching law was first formulated by R.J. Herrnstein (1961) following an experiment with pigeons on concurrent variable interval schedules. [3] Pigeons were presented with two buttons in a Skinner box, each of which led to varying rates of food reward. The pigeons tended to peck the button that yielded the greater food reward more often ...
Melioration theory accounts for many of the choices that organisms make when presented with two variable interval schedules. Melioration is a form of matching where the subject is constantly shifting its behavior from the poorer reinforcement schedule to the richer reinforcement schedule, until it is spending most of its time at the richest ...
This schedule yields a response rate that is low just after reinforcement and becomes rapid just before the next reinforcement is scheduled. Variable interval schedule (VI): A procedure in which behavior is reinforced after scheduled but unpredictable time durations following the previous reinforcement. This schedule yields the most stable rate ...
Interval scheduling is a class of problems in computer science, particularly in the area of algorithm design. The problems consider a set of tasks. Each task is represented by an interval describing the time in which it needs to be processed by some machine (or, equivalently, scheduled on some resource). For instance, task A might run from 2:00 ...
This “refractory” period can prevent the animal from overdosing on a drug. Variable interval (VI) schedules of reinforcement are identical to FI schedules, except that the amount of time between reinforced operant responses varies, making it more difficult for the animal to predict when the drug will be delivered.
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fixed interval scallop: the pattern of responding that develops with fixed interval reinforcement schedule, performance on a fixed interval reflects subject's accuracy in telling time. Organisms whose schedules of reinforcement are "thinned" (that is, requiring more responses or a greater wait before reinforcement) may experience "ratio strain ...