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761.
Roger T. Kelleher William C. Riddle Leonard Cook 《Journal of the experimental analysis of behavior》1962,5(1):3-13
Pigeons were trained on an observing-response procedure in which periods of VR 100 and EXT alternated unpredictably during a white light (mixed stimulus). During VR 100, responses on a food-producing key (the first key) were intermittently reinforced. Responses on the observing key (the second key) produced a green light (positive stimulus) when VR 100 was in effect, and a red light (negative stimulus) for EXT. The birds did not respond on either key during the negative stimulus, but they responded on the food-producing key when the positive stimulus appeared. When observing responses produced the positive or negative stimulus on FR, observing responses were maintained until the FR reached a maximum; beyond this, only food-producing responses occurred. When observing responses did not produce either stimulus, the observing-response rates fell to zero. With prolonged exposure to an FR 20 schedule of observing, observing-response rates during EXT were higher than during VR 100. Chlorpromazine hydrochloride decreased the total response output but markedly increased observing-response rates except when it was administered before sessions of observing response extinction. 相似文献
762.
Leonard D. Stern 《Behavior research methods》1999,31(1):94-98
Ten exercises are described that demonstrate some classic experiments in human memory and cognition. The studies, prepared in MEL Professional V1.0, have been incorporated in an undergraduate class taught by the author for a number of years. Survey data from students completing the course indicate that the exercises promote understanding of class material. Availability of the programs is described. 相似文献
763.
Pamela C. Fischer Randy J. Smith Elizabeth Leonard Dale R. Fuqua James L. Campbell Mark A. Masters 《Journal of counseling and development : JCD》1993,71(4):440-443
This study was designed to explore sex differences along several affective dimensions. A sample of 455 undergraduate students was administered several affective scales. A discriminant analysis was performed using the affective scales as discriminating variables and sex as the group variable. Significant sex differences were found on only two of nine affective scales, and the substantive significance of these differences seems to he minimal. The authors concluded that the promotion of faulty stereotypical beliefs should be abandoned in favor of increasingly complex inquiry in this area. 相似文献
764.
Summary Is an inflected word identified by first decomposing it into stem plus suffix or, instead, is it recognized as a whole? Several lexical decision experiments studied the recognition of inflected words in English (a language with few inflections) and Serbo-Croatian (a heavily inflected language). If recognition depended on decomposition, preceding the inflection with a brief exposure of the stem (<100 ms) should have primed the lexical entry for the stem and, therefore, facilitated recognition of the whole inflected word that followed. It did not. It was also found that the speed of recognizing an inflected word was more strongly associated with the frequency of the whole inflected form than with the frequency of its stem. The results suggested that in word recognition, lexical contact is first made with the whole word form. Nevertheless, morphological decomposition may still occur in subsequent processing. 相似文献
765.
Leonard P. Stark 《Sex roles》1991,24(9-10):639-650
The results of a survey administered to 806 undergraduate students serve as the basis for analyzing the relationships among traditional gender roles, same-sex intimacy, and homophobia. High levels of homophobia and low levels of intimacy were found among those who believe strongly in the traditional roles. Previous research has shown both homophobia and a lack of intimacy to be harmful to individuals and for society. The present findings may, therefore, constitute empirical evidence of the negative effects of gender roles. Sex differences found in the survey results also support this contention. A general model of the consequences of traditional gender role beliefs for those who hold these views is also speculated. 相似文献
766.
767.
Haas LJ 《Ethics & behavior》1991,1(3):175-189
This article reviews key philosophical and legal underpinnings of mental health professionals' obligation to obtain informed consent from consumers of their services. The basic components of informed consent are described, and strategies for clinically and ethically appropriate methods of obtaining informed consent are discussed. Emerging issues in informed consent involving duty to assess and protect against client dangerousness, obligations to third parties, and issues of deception are considered as well. The article proposes that part of the process of obtaining informed consent is the cultivation of a treatment environment that emphasizes beneficence and client autonomy. 相似文献
768.
When intrafaith couples' religion strictly prohibits premarital sexual intercourse, negotiating sexual intimacy can become a multilayered process of identity negotiation that compounds the difficulty of sexual communication. Through the lens of relational turbulence theory, this study explored how devout Christian couples negotiate sexual intimacy by reanalyzing qualitative interview data the first author collected in 2017 from 16 self-identified Christians (8 heterosexual couples). Seven themes revealed how relational uncertainty, partner interference, and partner facilitation manifested in the context of sexual intimacy negotiation. Themes of relational uncertainty experience and prevention included assumption of shared values, relationship talk, and sexual behaviors as an uncertainty catalyst. Partner facilitation and interference emerged as themes of sexual escalation and de-escalation including snowball effect, pinpointing underlying motivations for boundary violations, gatekeeping sexual temptation, and drawing from shared values of sacrifice and prayer. These interpretive findings advance the literature on relational turbulence theory and provide Christian dating couples with practical advice for how to negotiate sexual intimacy in committed premarital relationships. 相似文献
769.
E Paul Wileyto Janet Audrain-McGovern Leonard H Epstein Caryn Lerman 《Behavior research methods, instruments & computers》2004,36(1):41-51
The monetary choice questionnaire (MCQ) and similar computer tasks ask preference questions in order to ascertain indifference, the perceived equivalence of immediate versus larger delayed rewards. Indifference data are then fitted with a hyperbolic function, summarizing the decline in perceived value with delay time. We present a fitting method that estimates the hyperbolic parameter k directly from survey responses. Binary preferences are modeled as a function of time (X2) and a transformed reward ratio (X1), yielding logistic regression coefficients beta 2 and beta 1. The hyperbolic parameter emerges as k = beta 2/beta 1, where the logistic predicted p = .5 (the definition of indifference). The MCQ was administered to 1,073 adolescents and was scored using both standard and logistic methods. The means for In(k) were similar (standard, -4.53; logistic, -4.51), and the results were highly correlated (rho = .973). Simulated MCQ data showed that k was unbiased, except where beta 1 > or = -1, indicating a vague survey response. Jackknife standard errors provided excellent coverage. 相似文献
770.
This study examined short‐term attachment stability and sought to identify predictors of stability and change within a sample characterized by fathers' alcoholism. Results suggest moderate stability of attachment classifications (60% for mothers, 53% for fathers) from 12 to 18 months. Higher paternal and maternal alcohol symptoms, maternal depression, and maternal antisocial behavior were found in families with stable insecure mother–infant attachment compared to those who were stable secure. Mother–infant stable insecurity was associated with higher levels of maternal negative affect expression during play. Father–infant stable insecurity was associated with lower levels of paternal positive affect expression and decreased sensitivity during play. Stable insecure children also had higher levels of negative affect during parent–infant interactions and higher negative emotionality during other episodes compared to stable secure children. Results indicate that infants who were insecure at both time points had the highest constellation of family risk characteristics. 相似文献