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61.
Anna Gsottschneider Zasu Keller Gabriele Pitschel‐Walz Teresa Froböse Josef Bäuml Thomas Jahn 《Journal of Neuropsychology》2011,5(1):56-72
Background. Verbal learning and memory is often compromised in patients with schizophrenia who prefer encoding words in order of their presentation (serial clustering) rather than using semantic categories (semantic clustering). Method. One hundred and four in‐patients with schizophrenia were assessed twice with the California Verbal Learning Test. Results. Patients showed significantly less semantic than serial clustering at both assessment times. Usage of encoding strategies were not stable over time. An increase in semantic clustering improved recall and recognition performance. Conclusions. Patients with schizophrenia should be taught to use the more effective encoding strategy of semantic clustering in order to improve their memory performance. 相似文献
62.
Vaughn E. Stimbert James R. Frazier Harold R. Keller F. J. King 《Journal of School Psychology》1968,6(4):246-249
The effect of three reinforcement conditions was determined with respect to the learning and retention of a commercially available program purporting to teach simple nouns. The addition of candy reward to a novel method of presenting knowledge of results produced no change in performance when given on a continuous schedule, but reduced rate of responding when given on a partial schedule, i.e., only terninal frames. 相似文献
63.
McCullough JP Klein DN Keller MB Holzer CE Davis SM Kornstein SG Howland RH Thase ME Harrison WM 《Journal of abnormal psychology》2000,109(3):419-427
The nosology of chronic depression has become increasingly complex since the publication of the revised third edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-III-R; American Psychiatric Association, 1987), but there are few data available to evaluate the validity of the distinctions between the subtypes of chronic depression. The validity of the distinction between DSM-III-R chronic major depression (CMD) and major depression superimposed on dysthymia (double depression, DD) was examined. Participants were 635 patients with chronic depression in a 12-week trial of antidepressant medications. Patients with CMD, DD, and a 3rd group with a chronic major depressive episode superimposed on dysthymia (DD/CMD) were compared on demographic and clinical characteristics, family history, and response to treatment. Few differences were evident, although the depression of patients with DD/CMD tended to be more severe. 相似文献
64.
In genes we trust: the biological component of psychological essentialism and its relationship to mechanisms of motivated social cognition 总被引:1,自引:0,他引:1
Keller J 《Journal of personality and social psychology》2005,88(4):686-702
Three studies analyzed the biological component of psychological essentialism (laypeople's belief that social categories have an underlying nature/natural foundation) as it pertains to mechanisms of motivated social cognition. A new scale assessing the belief in genetic determinism is introduced as a measure of the biological component of essentialism. Results speak to the reliability and validity of the scale and show that essentialist beliefs are associated with basic social-cognitive motives and are also related to processes of stereotyping and prejudice. An experimental study found that rendering essentialist information salient elicits increased levels of prejudice and in-group bias, particularly in persons holding chronic essentialist beliefs. 相似文献
65.
Lohaus A Keller H Lissmann I Ball J Borke J Lamm B 《The Journal of genetic psychology》2005,166(4):365-383
In this study, the authors investigated the relation between early social contingency experiences and infants' competencies to detect nonsocial contingencies. In this study of 87 three-month-old infants, the authors operationalized early social contingencies as prompt, contingent maternal responses and coded microanalytically on the basis of video-recorded mother-infant interactions. The authors assessed competence to detect nonsocial contingencies by 2 methods: (a) the mobile conjugate reinforcement paradigm, which focuses on detecting contingencies between the infants' actions (kicking) and nonsocial consequences (mobile moving) and (b) the visual expectation paradigm, which focuses on detecting contingencies between 1 event (a smiley face projected on a screen) that was followed by a 2nd event (a complex picture projected on the other side of the screen). The results showed that early social contingencies are related to the competency to detect nonsocial action-consequence contingencies in the mobile conjugate reinforcement paradigm. 相似文献
66.
The Internet appears to offer psychologists doing research unrestricted access to infinite amounts and types of data. However, the ethical issues surrounding the use of data and data collection methods are challenging research review boards at many institutions. This article illuminates some of the obstacles facing researchers who wish to take advantage of the Internet's flexibility. The applications of the APA ethical codes for conducting research on human participants on the Internet are reviewed. The principle of beneficence, as well as privacy and confidentiality, informed consent, deception, and avoiding harm are all illustrated through the use of a hypothetical online study. 相似文献
67.
68.
Keller RT 《The Journal of applied psychology》2006,91(1):202-210
Transformational leadership, initiating structure, and selected substitutes for leadership were studied as longitudinal predictors of performance in 118 research and development (R&D) project teams from 5 firms. As hypothesized, transformational leadership predicted 1-year-later technical quality, schedule performance, and cost performance and 5-year-later profitability and speed to market. Initiating structure predicted all the performance measures. The substitutes of subordinate ability and an intrinsically satisfying task each predicted technical quality and profitability, and ability predicted speed to market. Moderator effects for type of R&D work were hypothesized and found whereby transformational leadership was a stronger predictor of technical quality in research projects, whereas initiating structure was a stronger predictor of technical quality in development projects. Implications for leadership theory and research are discussed. 相似文献
69.
Information ambiguity is prevalent in organizations and may influence management decisions. This study examines, given imprecise probabilities or outcomes, how managers decide which department's performance to investigate further when they are provided with performance benchmarks expressed in numerical intervals. Seventy‐nine MBA students participated in two experiments involving investigation decisions. We presented participants with interval benchmarks of a firm's expenses. Being below or above the benchmark should have been seen as equally negative. We found that, when facing outcome ambiguity, our participants consistently preferred to investigate further those departments whose performance was described as having an ambiguous outcome (when the outcome's range was centered either below or above the interval benchmark). However, when facing probabilistic ambiguity, there were two predominant choice patterns: consistently choosing to investigate the department whose performance is described with an ambiguous probability, or consistently choosing to investigate the department with unambiguous performance. To gain further insight, we conducted a follow‐up study collecting written protocols of participants' reasons for making choices involving ambiguous performance information. The results show that our participants displayed similar decision‐making processes when facing outcome ambiguity and probabilistic ambiguity. Copyright © 2001 John Wiley & Sons, Ltd. 相似文献
70.
Marital Conflict and Risk for Child Maladjustment over Time: Skin Conductance Level Reactivity as a Vulnerability Factor 总被引:4,自引:0,他引:4
Skin conductance level reactivity (SCLR) was examined as a longitudinal mediator and moderator of relations between parental marital conflict and psychopathology among children and young adolescents. Participants were 157 boys and girls (M age at T1 = 9.31 years; SD = 1.97); there was a 2-year lag between T1 and T2 assessments. At T1, participants' SCLR was assessed in response to lab challenges. Parents completed measures of aggressive marital conflict and child adjustment at T1 and T2. Supportive of moderation effects, T1 marital conflict interacted with T1 SCLR and gender in the prediction of changes in maladjustment. The link between marital conflict and increased internalizing and externalizing symptoms was stronger for girls with higher SCLR than girls with lower SCLR. Marital conflict predicted increased externalizing behaviors for boys with lower SCLR but not higher SCLR, although levels of externalizing behaviors were similar among boys with lower and higher SCLR especially at higher levels of marital conflict. Findings build on the literature by illustrating the importance of examinations of both family risk and youth biological vulnerability for the prediction of psychopathology. 相似文献