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221.
Nathalie Boutros Michael Davison Douglas Elliffe 《Journal of the experimental analysis of behavior》2011,96(1):39-61
Conditioned reinforcer effects may be due to the stimulus' discriminative rather than its strengthening properties. While this was demonstrated in a frequently‐changing choice procedure, a single attempt to replicate in a relatively static choice environment failed. We contend that this was because the information provided by the stimuli was nonredundant in the frequently‐changing preparation, and redundant in the steady‐state arrangement. In the present experiments, 6 pigeons worked in a steady‐state concurrent schedule procedure with nonredundant informative stimuli (red keylight illuminations). When a response‐contingent red keylight signaled that the next food delivery was more likely on one of the two alternatives, postkeylight choice responding was reliably for that alternative. This effect was enhanced after a history of extended informative red keylight presentation (Experiment 2). These results lend support to recent characterizations of conditioned reinforcer effects as reflective of a discriminative, rather than a reinforcing, property of the stimulus. 相似文献
222.
Reinforcers may increase operant responding via a response-strengthening mechanism whereby the probability of the preceding response increases, or via some discriminative process whereby the response more likely to provide subsequent reinforcement becomes, itself, more likely. We tested these two accounts. Six pigeons responded for food reinforcers in a two-alternative switching-key concurrent schedule. Within a session, equal numbers of reinforcers were arranged for responses to each alternative. Those reinforcers strictly alternated between the two alternatives in half the conditions, and were randomly allocated to the alternatives in half the conditions. We also varied, across conditions, the alternative that became available immediately after a reinforcer. Preference after a single reinforcer always favored the immediately available alternative, regardless of the local probability of a reinforcer on that alternative (0 or 1 in the strictly alternating conditions, .5 in the random conditions). Choice then reflected the local reinforcer probabilities, suggesting some discriminative properties of reinforcement. At a more extended level, successive same-alternative reinforcers from an alternative systematically shifted preference towards that alternative, regardless of which alternative was available immediately after a reinforcer. There was no similar shift when successive reinforcers came from alternating sources. These more temporally extended results may suggest a strengthening function of reinforcement, or an enhanced ability to respond appropriately to "win-stay" contingencies over "win-shift" contingencies. 相似文献
223.
Moïra Mikolajczak Nathalie BalonMartine Ruosi Ilios Kotsou 《Personality and individual differences》2012,52(4):537-540
Are emotionally intelligent people sentimental? Does their greater sensitivity handicap them or are they able, as theory would expect, to experience and regulate emotions flexibly, depending on their goals? We examined this issue in organizational settings. Good managers are indeed expected to be both attuned to feelings (theirs as well as their subordinates’) and able to put them aside when needed to take tough (but necessary) decisions. Our results show that emotionally intelligent managers do make better managers, as reflected by greater managerial competencies, higher team efficiency and less stressed subordinates. Moreover, and most importantly, emotionally intelligent managers are not just nicer managers. As our results show, emotional intelligence has nothing to do with sentimentality. Actually, it is managers with low EI who have the greatest difficulties to put their emotions aside and not let them interfere when inappropriate. 相似文献
224.