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1.
Both alcohol and practice affect choice reaction time. The present study was conducted to investigate the possibility that impairment from alcohol and improvement with practice could be attributed to changes in the efficiency of control mechanisms (Rabbitt, 1979a), some of which depend upon the ability to judge response speed accurately. Twenty subjects participated in a four-choice reaction time experiment in which they received no alcohol (NA) in Session 1 and either no alcohol (10 subjects) or 0.8 ml alcohol (A) per kilogram of body weight (10 subjects) in Session 2. The task was to respond as fast and as accurately as possible to each stimulus. In addition, subjects were required to press a fifth key after any response that they considered to be both fast and accurate. Subjects had no difficulty in performing this task: (1) there was a significant difference of 122 msec between the mean response time for correct responses indicated as fast and that for correct responses not indicated as fast, and (2) subjects indicated 1 in 4 correct responses but only 1 in 64 errors. Alcohol increased all response times by approximately 40 msec. In contrast, practice decreased response times less for correct responses not indicated as fast than for correct responses indicated as fast. The ability to distinguish between fast and slow responses was thus unaffected by alcohol, but was improved by practice. Responses indicated as "fast" were significantly faster than errors, and appeared to occur without warning (unlike errors, which tended to end a sequence of increasingly fast correct responses). The results suggest that alcohol and practice influence choice reaction time in qualitatively different ways: Alcohol impairs overall response speed but has no effect on the ability to judge response speed, whereas practice improves both. 相似文献
2.
Effective overall performance in judgment tasks generally involves both acquisition of information and integration of the information acquired. When information is costly the decision maker must balance acquisition costs against improved decisional accuracy, a complex balancing problem in which, laboratory evidence suggests, humans often do poorly. The three experiments reported here extend this earlier evidence to different task structures, subject pools, incentive systems, information volumes, decision aids, and kind of data sources. Though each of these factors was found to affect performance, the general finding was of persistent underpurchase (buying less information overall than is optimal) and mispurchase (buying poor sources when better sources are available at the same cost), with significant inflation of overall costs. It is proposed that unaided human judgment is unequal to the complexity of the cost/benefit trade-offs involved in acquiring costly information, and that formal decision analysis should be preferred whenever the stakes justify. 相似文献
3.
Niall Connolly 《Pacific Philosophical Quarterly》2023,104(2):348-367
Realists about fictional characters posit a certain theoretical role and a candidate to fill this role. I will delineate the role realists take fictional characters like Emma Woodhouse to fill, and I will argue that it is better filled by what I will call ‘characterisations’. In explaining what I mean by ‘characterisations’, I will show that the existence of these entities is comparatively uncontroversial. Realists should acknowledge their existence, but doing so, I will argue, obviates the need to acknowledge the existence of Emma and other fictional individuals. 相似文献
4.
Daniel G. Derksen Deborah A. Connolly 《Journal of Investigative Psychology & Offender Profiling》2023,20(1):48-62
We reviewed the child and the adult literature on the impact of witnesses drawing what happened on the number of details recalled and the accuracy of the reported details. Most experiments reported a beneficial effect of drawing what happened (or drawing the scene) on the number of details reported primarily in free recall and sometimes also in cued recall. The consensus across studies was that drawing protocols did not negatively impact the accuracy of reported details (when accuracy was attainable) unless suggestive details were drawn. These results were largely consistent regardless of interviewer expertise or protocol used. Draw-and-tell instructions should be considered by forensic investigators for the following reasons: (1) the beneficial effect on number of details recalled with no detriment to accuracy, (2) the added benefit for children who need additional interviewer support, and (3) the ease at which the instruction can be implemented with minimal expertise or training. However, more ecologically valid research is needed to establish the efficacy of drawing (1) in forensic interviews, (2) in the presence of misinformation, (3) across instances of repeated event memory, and (4) across sequential interviews. 相似文献
5.
In this paper, we propose an examination of the shared connections between the French philosopher, Maurice Merleau-Ponty and the Austro-Hungarian movement theorist, Rudolf Laban.In many ways Merleau-Ponty's philosophy demonstrates a synthesis of the best in existen-tialism and phenomenology. In like manner, Rudolf Laban was a synthesizer of experiences and theories of movement.we propose to examine the parallels and resonances of their theory within the forum of a hypothetical, collegial conversation. This dialogue will be prefaced by an historical contextualization of their work and an explanation of the appropriate reading sensibility with which to enter our interpretation of their text. In this way, we hope to reveal (a) possible parallels and resonances between their theories concerning the body in perception and movement, and (b) possible connections between phenomenology and movement education. 相似文献
6.
7.
K Connolly 《Psychological reports》1968,23(2):625-626
8.
We compared three approaches to scoring qualitative aspects of verbal fluency performance in 88 healthy young adults. Phonemic and semantic fluency output was scored for word clustering and switching between clusters. Convergent validity analyses using other tests presumed to tap into strategy use (California Verbal Learning Test, Ruff Figural Fluency Test) support scoring of phonemic and semantic clusters on both fluency tasks. Task-discrepant clustering (e.g., semantic clustering on phonemic fluency) may index intentional strategy use on both fluency tasks, whereas task consistent clustering (e.g., phonemic clustering on phonemic fluency) appears strategic only on semantic fluency. Switching can be decomposed into subtypes that appear to reflect different cognitive processes on phonemic versus semantic fluency. Principal components analyses suggest that earlier scoring methods do not fully capture the "process" aspects of verbal fluency performance. 相似文献
9.
Hannah C. Levy Sonya G. Wanklyn Andrew C. Voluse Kevin M. Connolly 《Military psychology》2018,30(4):370-379
Posttraumatic stress disorder (PTSD) and substance use disorder (SUD) commonly co-occur. Emerging research suggests that both distress tolerance and impulsivity may underlie this comorbidity. However, to our knowledge no studies have examined whether these 2 constructs predict outcome in PTSD-SUD treatment. The current study investigated whether pretreatment distress tolerance and impulsivity predicted posttreatment PTSD and cravings severity in a sample of 70 Veterans receiving concurrent treatment for PTSD and SUD in a residential day treatment program. Veterans completed measures of symptom severity before and after treatment. Results demonstrated that pretreatment distress tolerance predicted posttreatment PTSD severity while controlling for pretreatment PTSD. By contrast, pretreatment impulsivity was not predictive of posttreatment PTSD while controlling for pretreatment values. Neither distress tolerance nor impulsivity predicted posttreatment cravings severity. The findings support the notion that distress tolerance may help to explain the co-occurrence of PTSD and SUD and suggest that targeting this construct in PTSD-SUD treatment may be important for successful outcomes. 相似文献
10.
Pradeep Racherla Munir Mandviwalla Daniel J. Connolly 《Journal of Consumer Behaviour》2012,11(2):94-104
In this study, we apply the uncertainty reduction theory from communication to delineate the antecedents of consumers' trust in online product reviews. We test the competing effects of information content (argument quality) and social component (perceived background similarity) on consumers' trust in reviews. We also hypothesize that the strength of the effect is moderated by consumers' involvement. To test the hypotheses, we adopted a 2 × 2 × 2 repeated measures experimental design. The results show that both argument quality and perceived similarity contribute to increased trust but in varying degrees. The results provide mixed support to the moderating role of involvement. While argument quality played an important role in the high involvement mode, perceived similarity explained more variance in the low involvement mode. We discuss the implications of these results for both research and practice. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献