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291.
292.
It has been suggested that the analgesic effect of morphine becomes attenuated over the course of successive administrations by a conditional, compensatory, hyperalgesic response elicited by the administration procedure, thus accounting (in part) for analgesic tolerance. On the basis of this associative model of tolerance, it would be predicted that established tolerance would be extinguished by placebo sessions. In experiments of apparently similar design (but conducted by different experimenters in different laboratories), data both confirming and refuting this prediction have previously been published. The present experiment, conducted jointly by the experimenters who reported the divergent findings, was designed to determine the reasons for the different results. It was found that placebo sessions do consistently attenuate morphine analgesic tolerance. Such extinction is not limited to the experimenter, drug preparation, rat strain, or apparatus used in the original, successful demonstration of the phenomenon, but rather is also demonstrable under conditions similar to those used in subsequent experiments which failed to demonstrate extinction of tolerance. Results of the present experiment suggest that the failures to demonstrate extinction of tolerance were attributable to insufficient extinction training. 相似文献
293.
Steven J Sherman Karin Ahlm Leonard Berman Steven Lynn 《Journal of experimental social psychology》1978,14(4):340-350
The present study attempted to apply social judgment theories to the effects of context on judgments of the importance of a social issue and on subsequent issue-related behavior. Subjects judged the importance of a target issue (recycling) in the context of either important or unimportant social issues and were subsequently asked in a separate setting for help on a local recycling project. Context produced contrast effects on rating scale judgments of the importance of recycling. These judgments, if salient, were then used as a basis for subsequent support of the recycling project. When either the initial judgment was not salient or no prior judgment of recycling was made, the importance of the context had a positive effect on amount of support for recycling, such that more help was given in the important context conditions. Results indicate that contrast effects on the ratings are response base rather than perceptual in nature, but that the rating, if salient, can serve as subsequent behavior and attitudes. 相似文献
294.
Melbourne F. Hovell Jean B. Schumaker James A. Sherman 《Journal of experimental child psychology》1978,25(1):41-57
This study investigated the effects of parental models plus nondifferential praise and expansions plus nondifferential praise on 2-year-old children's spontaneous use of color and size adjective-noun combinations. Mothers modeled either a color or size adjective-noun combination and expanded the other. Both parental models and expansions increased the children's spontaneous use of the target adjective-noun combinations, but expansions produced a stronger effect than models. These results, and naturalistic data indicating that parents often provide a large number of expansions for their children, suggest that expansions may play an important role in normal language development. 相似文献
295.
Aging and prejudice: Diminished regulation of automatic race bias among older adults 总被引:1,自引:0,他引:1
A popular view holds that older adults are more prejudiced than younger adults because they grew up in a less tolerant era. An alternative view proposes that aging corresponds with stronger prejudice among older adults because they have reduced capacity to inhibit biased associations that come to mind automatically. To independently assess these possibilities, we modeled the processes underlying implicit racial attitudes in samples of teenagers through people in their nineties. Results indicated that older adults showed greater implicit bias because they were less able to regulate the automatic associations they possessed, not because of holding stronger associations in the first place. These findings suggest that age-related increases in racial biases, even those that are implicit, may be due to self-regulatory failure of older adults, rather than to cohort effects. 相似文献
296.
Nancy Sherman 《Philosophical Studies》2009,144(1):71-80
Jonathan Lear in Radical Hope tackles the idea of cultural devastation, in the specific case of the Crow Indians. What do we mean by “annihilation” of a culture? The moral point of view that he imagines as he reconstructs the eve and aftermath of this annihilation is not second personal, of obligation, but first personal, in the collective and singular, as told by the Crows, with Lear as “analyst.” Radical Hope is a study of representative character of a people—of virtue, courage, resilience, and hope in the face of cultural collapse. The leading questions are shaped by ancient Greek ethics, but with a twist: On the brink of cultural death, what counts for us as good living and what is the nature of the virtues or excellences that constitute it? How might a leader, a phronimos, exemplify it? This puts it too narrowly. The questions, also, are Wittgensteinian: How does a nation go on, when the concepts and way of life it has lived by for centuries are no more? What does it mean to go on? What does it mean to stop when the marks of going on are no longer? 相似文献
297.
Elise J. Percy Steven J. Sherman Leonel Garcia-Marques André Mata Teresa Garcia-Marques 《Psychonomic bulletin & review》2009,16(6):1037-1042
In the present research, we investigated the influence of native-language adjective-noun word order on category accessibility
for nouns and adjectives by comparing Portuguese speakers (in whose language nouns precede adjectives) with English speakers
(in whose language adjectives precede nouns). In two studies, we presented participants with different numbers of verbal or
pictorial stimuli, and subsequently they answered questions about noun- and adjective-conditioned frequencies. The results
demonstrated a primacy effect of nativelanguage word order. Specifically, although both populations showed a speed advantage
for noun-conditioned questions, this tendency was significantly stronger for Portuguese than for American participants. We
discuss the important role of native-language syntax rules for the categorization and representation of information. 相似文献
298.
299.
Nira Liberman Yaacov Trope Steven J. Sherman 《Journal of experimental social psychology》2007,43(1):143-149
A series of four studies demonstrates that, across different operationalizations of level of construal, different types of activities, and for both the self and another person as targets, construing activities in high-level terms fosters perception of the more distal future as appropriate for their enactment. Specifically, the studies show that thinking about superordinate “why” (rather than subordinate “how”) aspects of actions, about the implications of actions for one’s personality (rather than the objects that would be used in performing the action), and about abstract (rather than concrete) aspects of actions leads people to expect the actions to be performed in the more distant future. These results suggest that the association of level of construal and time perspective is bi-directional, in that time perspective affects level of construal and, in addition, level of construal affects time perspective. 相似文献
300.
Cohen GL Sherman DK Bastardi A Hsu L McGoey M Ross L 《Journal of personality and social psychology》2007,93(3):415-430
Three studies link resistance to probative information and intransigence in negotiation to concerns of identity maintenance. Each shows that affirmations of personal integrity (vs. nonaffirmation or threat) can reduce resistance and intransigence but that this effect occurs only when individuals' partisan identity and/or identity-related convictions are made salient. Affirmation made participants' assessment of a report critical of U.S. foreign policy less dependent on their political views, but only when the identity relevance of the issue rather than the goal of rationality was salient (Study 1). Affirmation increased concession making in a negotiation over abortion policy, but again this effect was moderated by identity salience (Studies 2 and 3). Indeed, although affirmed negotiators proved relatively more open to compromise when either the salience of their true convictions or the importance of remaining faithful to those convictions was heightened, the reverse was true when the salient goal was compromise. The theoretical and applied significance of these findings are discussed. 相似文献