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The present experiment examined the effects of varying stimulus disparity and relative punisher frequencies on signal detection by humans. Participants were placed into one of two groups. Group 3 participants were presented with 1:3 and 3:1 punisher frequency ratios, while Group 11 participants were presented with 1:11 and 11:1 punisher frequency ratios. For both groups, stimulus disparity was varied across three levels (low, medium, high) for each punisher ratio. In all conditions, correct responses were intermittently reinforced (1:1 reinforcer frequency ratio). Participants were mostly biased away from the more punished alternative, with more extreme response biases found for Group 11 participants compared to Group 3. For both groups, estimates of discriminability increased systematically across the three disparity levels and were unaffected by the punisher ratios. Likewise, estimates of response bias and sensitivity to the punisher ratios were unaffected by changes in discriminability, supporting the assumption of parameter invariance in the Davison and Tustin (1978) model of signal detection. Overall, the present experiment found no relation between stimulus control and punisher control, and provided further evidence for similar but opposite effects of punishers to reinforcers in signal-detection procedures.  相似文献   
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Three experiments using human participants varied the distribution of point‐gain reinforcers or point‐loss punishers in two‐alternative signal‐detection procedures. Experiment 1 varied the distribution of point‐gain reinforcers for correct responses (Group A) and point‐loss punishers for errors (Group B) across conditions. Response bias varied systematically as a function of the relative reinforcer or punisher frequencies. Experiment 2 arranged two conditions — one where an unequal ratio of reinforcement (5:1 or 1:5) was presented without punishment (R‐only), and another where the same reinforcer ratio was presented with an equal distribution of point‐loss punishers (R+P). Response bias was significantly greater in the R‐only condition than the R+P condition, supporting a subtractive model of punishment. Experiment 3 varied the distribution of point‐gain reinforcers for correct responses across four unequal reinforcer ratios (5:1, 2:1, 1:2, 1:5) both without (R‐only) and with (R+P) an equal distribution of point‐loss punishers for errors. Response bias varied systematically with changes in relative reinforcer frequency for both R‐only and R+P conditions, with 5 out of 8 participants showing increases in sensitivity estimates from R‐only to R+P conditions. Overall, the results indicated that punishers have similar but opposite effects to reinforcers in detection procedures and that combined reinforcer and punisher effects might be better modeled by a subtractive punishment model than an additive punishment model, consistent with research using concurrent‐schedule choice procedures.  相似文献   
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Drawing upon two independent national samples of 201 and 241 psychology graduate students, this article describes the development and psychometric evaluation of 4 Web-based student self-report scales tapping student socialization in the responsible conduct of research (RCR) with human participants. The Mentoring the Responsible Conduct of Research Scale (MRCR) is composed of 2 subscales assessing RCR instruction and modeling by research mentors. The 2 subscales of the RCR Department Climate Scale (RCR-DC) assess RCR department policies and faculty and student RCR practices. The RCR Preparedness scale (RCR-P) and the RCR Field Integrity scale (RCR-FI) measure respectively students' confidence in their ability to conduct research responsibly and their belief in the RCR integrity of psychology as a discipline. Factor analysis, coefficient alphas, correlations, and multiple regression analyses demonstrated each of the scales had good internal consistency and concurrent and construct validity.  相似文献   
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The two experiments presented in this paper tested the effects of gender agreement on lexical decisions by presenting grammatically congruent and incongruent noun phrases in different context-target combinations. In the first experiment, a condition in which the target noun was directly preceded by a gender-marked determiner was contrasted with a condition in which an invariable adjective intervened between the determiner and the target. In the second experiment we compared the effects of gender marking in the latter condition with a condition in which both the determiner and the intervening adjective carried an overt gender mark. It was shown first, that lexical decision times to target nouns were longer for incongruent context-target combinations than for a congruent baseline condition. Second, the magnitude of the congruency effect was stronger when the target noun was preceded by a determiner plus an invariable adjective than by a determiner only. Third, the magnitude of the effect did not vary according to whether or not the intervening adjective carried a phonetically realized mark of gender. These results are discussed in terms of the automaticity of syntactic processes, and the crucial role of determiners in setting agreement features for the entire noun phrase when processing languages such as French.  相似文献   
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The present investigation concerned the relationship between intentional and incidental learning of verbal material. Both task meaningfulness (sequential dependency of the material) and shifts in performance over time were examined for differential patterns under both types of learning conditions. Cover task performance consisted of the search for typographical errors across four paragraphs of a narrative, learning the recall and recognition of examples of categories of objects in the text. There was lack of support for the argument that incidental and intentional learning represent two distinct types; rather Ss responded similarly to increased task meaningfulness under both learning conditions and evidenced identical performance patterns over time. Results were interpreted within an intentional-attentional hypothesis of incidental learning.  相似文献   
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An effective approach to reducing recidivism is, first, to identify a youth's risk of reoffending and then to match the intensity of interventions to that risk level. This pre-post quasi-experimental, prospective study compared 247 (pre) with 217 (post) adjudicated youths to examine the implementation of the Structured Assessment of Violence Risk in Youth (SAVRY) and its effects on case management practices in Louisiana's Caddo parish probation office. The results indicated that placement rates dropped by 50%, use of maximum levels of supervision dropped by almost 30%, and use of community services decreased except for high-risk youths, but only after the SAVRY was properly implemented. This shift towards more appropriate allocation of resources that are matched to risk level occurred without a significant increase in reoffending. The implications for implementation and for use of risk/needs assessment in juvenile probation are discussed. Copyright ? 2012 John Wiley & Sons, Ltd.  相似文献   
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