عنوان

The Instrumentally-Derived Incentive-Motivational Function

شماره

LA1mj192cg

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انگلیسی

عنوان اصلي

The Instrumentally-Derived Incentive-Motivational Function

نام عام مواد

[Article]

نام نخستين پديدآور

Weiss, Stanley J.

متن يادداشت

Though differential reinforcement, a discriminative stimulus (S^D) acquires two properties.  The operant contingency is responsible for the S^Ds response-discriminative property.  However, as stimulus control develops an S^D also acquires incentive-motivational properties through its association with reinforcement changes.  A systematic series of experiments are described that breaks the usual co-variation of response and reinforcement rates in most discriminative operant situations.  In three groups, S^Ds (a tone and a light) occasioned steady moderate lever pressing in rats that ceased when neither S^D was present.  Probably of reinforcement in these S^Ds, relative to when both were off, was systematically manipulated to make them incentive-motivationally excitatory, neutral or inhibitory.  In each S^D, for the "excitatory" group reinforcement (food) probability increased from 0 to 100%, for the "neutral" group it was unchanged and for the "inhibitory" group it decreased from 100 to 0%.  Although behaviorally indistinguishable in training, a stimulus-compounding assay revealed that tone-plus-light tripled response rate in the incentive-excitatory group, doubled rate in the incentive-neutral group and didn't increase rate in the incentive-inhibitory group - producing the instrumentally derived incentive-motivational function for the first time.  This is discussed context of two-process learning theory, a functional analysis of transfer-of-control research plus how the response-discriminative and incentive-motivational properties acquired by an S^D contribute to the stimulus control of behavior.

تاريخ نشر

2014

عنوان

International Journal of Comparative Psychology

شماره جلد

27/4

عنصر شناسه اي

Weiss, Stanley J.

نام الکترونيکي

نوع ماده

[Article]

کد کاربرگه

275578

سطح دسترسي

a

تكميل شده

Y