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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 OBS

An intermittent schedule of reinforcement in which the delivery of reinforcement varies in a random manner, either over time or number of behavior, in a manner so that the person behaving cannot predict when reinforcement will occur. If reinforcement is delivered following a behavior once a day but the time of delivery varies and is unpredictable, this is a variable-interval (VI) schedule. If reinforcement occurs once for each ten or twenty behaviors but varies and is unpredictable, this is a variable-ratio (VR) schedule. All gambling, such as a slot machine, is based on VR schedules. Variable schedules produce constant behavior that are relatively resistant to extinction.  1, record 1, English, - variable%20schedule

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 OBS

Programme à renforcement intermittent : Le renforcement intermittent peut s'effectuer en fonction de deux paramètres : le nombre de réponses (...) et le temps (...). Chacun de ces deux types de programme peut être fixe ou variable.  1, record 1, French, - programme%20variable

Record 1,  Textual support,  Spanish