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71.
Phil Reed 《Learning and motivation》1996,27(4):464-475
Three experiments examined the effect of reinforcement magnitude on free-operant response rates. In Experiment 1, rats that received four food pellets responded faster than rats that received one pellet on a variable ratio 30 schedule. However, when the food hopper was illuminated during reinforcer delivery, there was no difference between the rates of response produced by the two magnitudes of reward. In Experiment 2, there was no difference in response rates emitted by rats receiving either one or four pellets of food as reward on a random interval (RI) 60-s schedule. In Experiment 3, rats responding on an RI 30-s schedule did so at a lower rate with four pellets as reinforcement than with one pellet. This effect was abolished by the illumination of the food hopper during reinforcement delivery. These results indicate that the influence of magnitude is obscured by manipulations which signal the delivery of reinforcement. 相似文献
72.
Bill Henry Mike Feehan Rob McGee Warren Stanton Terrie E. Moffitt Phil Silva 《Journal of abnormal child psychology》1993,21(5):469-480
The current study assessed the relative importance of conduct problems and depressive symptoms, measured at two ages (11 and 15), for predicting substance use at age 15 in an unselected birth cohort of New Zealand adolescents. Among males, when the relative predictive utility of both conduct problems and depressive symptoms was assessed, only pre-adolescent depressive symptoms were found to predict multiple drug use 4 years later. No predictive relation was found between early symptomatology and later substance use among females. The strongest association between predictors and substance use emerged between age 15 multiple drug use and concurrent conduct problems for both males and females. Finally, both conduct problems and depressive symptoms at age 15 were also found to be associated with concurrent self-medication among females.This work was supported by USPHS grants MH-43746 and MH-45070 from the Antisocial and Violent Behavior Branch of the National Institute of Mental Health to Terrie Moffitt. Bill Henry was funded by a Fulbright Travel Award. The Dunedin Multidisciplinary Health and Development Research Unit is supported by the Medical Research Council and Health Research Council of New Zealand. Appreciation is expressed to the interviewers who collected the data, and to the young New Zealanders who were members of the sample. 相似文献
73.
More than six decades after Freud's death, psychoanalysts are certainly not more unified in their view of the concept of the unconscious—its structure and its way of working—than in ‘the good old days’. Challenges are facing psychoanalysis from many perspectives, urging psychoanalysts to continuously reconsider their theoretical grounds. This paper pursues three lines of argumentation concerning the Unconscious. The first line concerns the relation to neuroscience and this paper suggests the concept of background feelings (Damasio) as a contribution to another understanding of deficits in the psychoanalytic relationship. The second line concerns the relation to cognitive semiotics, and here, the paper stresses the concept of basic image sehemata as a possible link between the subject's pre-reflective awareness of the other and the internal world of phantasy. The third line pursues a concept of the analytic interpretation which is close to the Freudian idea that psychoanalysis is the communication between two Unconscious, and, consequently, that the psycho-analytic interpretation is not per se a conscious act. 相似文献
74.
75.
Reed P Reynolds G Fermandel L 《Quarterly journal of experimental psychology (2006)》2012,65(7):1345-1360
Stimulus overselectivity occurs when only one of potentially many aspects of the environment controls behaviour. In four experiments, human participants were trained and tested on a trial-and-error simultaneous discrimination task involving two two-element compound stimuli. Overselectivity emerged in all experiments (i.e., one element from the reinforced compound controlled behaviour at the expense of the other). Following revaluation (extinction) of the previously overselected stimulus, behavioural control by the underselected stimulus element emerged without any direct training of that stimulus element. However, while a series of extinction manipulations targeting the revaluation of the overselected stimulus produced differential extinction of that stimulus, they did not result in differential emergence of the previously underselected stimuli. The results are discussed with respect to the theoretical implications for attention-based accounts of overselectivity. 相似文献
76.
Benoît Beck Phil Iversen Andreas Sashegyi 《Journal of Multi-Criteria Decision Analysis》2014,21(3-4):139-151
Taking decisions during the development of a new drug requires combining many and varying pieces of information. The interconnections between these different pieces of information are often only partially known and in some cases merely conjectured. Despite this uncertainty, decisions must be taken – often with regard to the balance of risk and benefit – in order to make progress. A clear, consistent and efficient methodology for describing the structure of a project and the comprehensive state of knowledge at any point in time is required in order to add transparency to the decision process. A viable methodology must allow for a natural characterization of the uncertainty inherent in the drug development process and a relatively easy implementation. We present a possible solution that satisfies these requirements. The foundation of the proposed approach is based on a beta‐binomial update mechanism well known in Bayesian statistics. This work provides a consistent framework for solving hierarchical multicriteria decision problems. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
77.
This paper contributes towards a lay ethics of nanotechnology through an analysis of talk from focus groups designed to examine
how laypeople grapple with the meaning of a technology ‘in-the-making’. We describe the content of lay ethical concerns before
suggesting that this content can be understood as being structured by five archetypal narratives which underpin talk. These
we term: ‘the rich get richer and the poor get poorer’; ‘kept in the dark’; ‘opening Pandora’s box’; ‘messing with nature’;
and ‘be careful what you wish for’. We further suggest that these narratives can be understood as sharing an emphasis on the
‘giftedness’ of life, and that together they are used to resist dominant technoscientific and Enlightenment narratives of
control and mastery which are encapsulated by nanotechnology. 相似文献
78.
Phil Jones 《欧洲心理治疗、咨询与健康杂志》2013,15(3):251-266
This article describes a research approach to investigating the ways in which therapists understand the nature of therapeutic change. The research was based in qualitative, narrative approaches to in-depth analysis of vignettes provided by drama therapists. The article describes the approach to the generation of data through the internet by aMSN messenger. It reports on the approach taken to the analysis of data along with samples from the findings. 相似文献
79.
Volker Thomas Phil Striegel Dorothea Dudley Jane Wilkins Darlene Gibson 《Journal of Loss and Trauma》2013,18(2):167-187
Abstract This study focuses on the comparison of individual variables of bereavement, depression, and stress with variables associated with the couple relationship, including cohesion, adaptability, communication, satisfaction, and partner support. In total, 24 couples completed self-report instruments within 2 weeks after a miscarriage. Mothers had significantly stronger grief reactions than fathers. Fathers and mothers perceived their relationships similarly as highly functional. Except for mothers' depression and their satisfaction with the couple relationship, the correlations between individual and relationship variables were rather weak. Implications of the results for family professionals are discussed. 相似文献
80.
Phil Hutchinson 《International Journal of Philosophical Studies》2013,21(4):569-577
AbstractIn the late 1930s Heidegger makes allusions to ‘the wild’ and ‘the mild’ in connection with a human liberation that he understands as a steadfast response to the claim that historical being (Seyn) makes upon us. The following paper elucidates these allusions in terms of the overturning of metaphysics that they entail. 相似文献