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"Listening behavior is significantly affected by stuttering… . Stuttering seems to act as a behavioral depressant to the listener. The 'avoidant' activities of the listener may be of significance in classing stuttering as a negative reinforcer (noxious stimulus) to the listener." (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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The immediate and carry-over effects of scopolamine and d-amphetamine were evaluated in a free running Y-maze spontaneous alternation task. The immediate effect of scopolamine (1.0 mg/kg) or d-amphetamine (5.0 mg/kg) was to reduce alternation to chance or to levels significantly below chance (perseveration), respectively. On a second, non-drug test day alteration decreased in saline treated animals, but increased among mice which received scopolamine on Day 1. In contrast, upon retesting in the non-drug state, the performance of animals initially treated with d-amphetamine resembled that of saline treated mice. Subsequent experiments revealed that these effects could not be attributed to drug effects on peripheral mechanisms, consolidation, residual drug action or drug dissociated learning. It was concluded that the behavioral effects of scopolamine and d-amphetamine are qualitatively different. Whereas scopolamine disrupts habituation, d-amphetamine induces perseveration independently of any effects on habituation. 相似文献
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Corynebacterium vaginale was recovered from vaginal-cervical swab specimens in 164 of 288 women with leukorrhea and in four of 30 women without signs or symptoms of lower genital tract infection. The amount and character of the leukorrhea observed in association with C. vaginale infection were variable; in typical cases the discharge had the appearance of a thin paste. In a series of 100 patients studied to determine the apparent causes of leukorrhea, noninfectious causes were inferred in seven patients and no cause ascertained in six. Candida or other yeasts, C. vaginale, and Trichomonas vaginalis were identified alone or in combination in 87 patients; 53 had yeasts, 35 had C. vaginale, and 15 had T. vaginalis. 相似文献
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Rosenberg Leon A.; McHenry Thomas B.; Rosenberg Anna Maria 《Canadian Metallurgical Quarterly》1962,46(4):265
An experiment to determine the degree of accuracy with which sociometric ratings can be used to predict academic performance. A 14-item sociometric questionnaire was administered to 86 students before any academic grades were available. 2 rating measures, one emphasizing future job performance and the other dealing with personal adjustment, were found to be significantly related to academic performance (r = .40, p 相似文献