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31.
Facilitation of human tobacco self-administration by ethanol: a behavioral analysis. 总被引:3,自引:0,他引:3 下载免费PDF全文
R R Griffiths G E Bigelow I Liebson 《Journal of the experimental analysis of behavior》1976,25(3):279-292
The effect of ethanol on the cigarette smoking of alcoholic subjects was studied in a residential laboratory. During daily 6-hr sessions, cigarettes were obtained either by request to the ward staff or by operation of a lever (fixed-ratio 5 or 10). In a mixed sequence across days, sessions involved ingestion of either vehicle (orange juice or vehicle plus ethanol (133.7 g). During ethanol sessions, the rate of cigarette smoking increased from 26% to 117% of vehicle levels. A series of control studies eliminated a number of potential behavorial mechanisms for the observed effect and indicated that the ethanol-induced increase in cigarette smoking occurred under a variety of experimental conditions: (1) when smoking could not occur concurrently with ethanol or vehicle consumption; (2) when subjects were not allowed to socialize; (3) when ingestion of ethanol or vehicle was scheduled for a number of consecutive days; (4) when various doses of ethanol were administered under blind conditions. In control experiments, weighing unsmoked tobacco and counting the number of puffs per cigarette indicated the effect was not due to smoking less of each cigarette. The effect was not limited to the experimental sessions alone, since total daily smoking was higher on ethanol days than vehicle days. 相似文献
32.
An analysis of indefinite probability statements has been offered by Jackson and Pargetter (1973). We accept that this analysis will assign the correct probability values for indefinite probability claims. But it does so in a way which fails to reflect the epistemic state of a person who makes such a claim. We offer two alternative analyses: one employing de re (epistemic) probabilities, and the other employing de dicto (epistemic) probabilities. These two analyses appeal only to probabilities which are accessible to a person who makes an indefinite probability judgment, and yet we prove that the probabilities which either of them assigns will always be equivalent to those assigned by the Jackson and Pargetter analysis. 相似文献
33.
Daniel R. McLeod Roland R. Griffiths George E. Bigelow John Yingling 《Behavior research methods》1982,14(5):463-466
An automated version of the Digit Symbol Substitution Test is described that employs a relatively inexpensive, commercially available microcomputer to present and score the task. Advantages of the automated DSST include: (1) objective scoring of both speed and accuracy of test performance, (2) printed copies of test scores, (3) convenient administration under standardized test conditions, and (4) the capacity for repeated assessment of an individual’s performance over time. Task performance data for individual subjects following doses of pentobarbital are presented; these data illustrate both the stability of task performance under constant conditions and the within-subjects sensitivity of task performance to experimental manipulations. 相似文献
34.
Patrick Bigelow 《Man and World》1982,15(1):67-82
Such is the criticism commonly passed upon Socrates in our age, which boasts of its positivity much as if a polytheist were to speak with scorn of the negativity of a monotheist, for the polytheist has many gods, the monotheist only one. So our philosophers have many thoughts, all valid to a certain extent; Socrates had only one, which was absolute. 相似文献
35.
Unstable ocular dominance and reading ability 总被引:4,自引:0,他引:4
An ocular anomaly, unstable ocular dominance, has been shown to be associated with poor reading performance in clinically selected subjects. A study is reported in which this anomaly was examined in a nonclinical sample. Two groups of children of similar reading performance and IQ but differing in chronological age were selected. The older children had a mean discrepancy between their reading and chronological age of 19 months. Unstable ocular dominance was more frequent in these poor readers. The hypothesis that this instability would lead to more errors and longer decision times for distinguishing left-right mirror-image figures was not supported. If unstable ocular dominance is to be established as anything other than a correlate of specific reading retardation, it is necessary to establish the processes through which it is operative. These have yet to be determined. 相似文献
36.
37.
Bigelow NO Turner BM Andreasen NC Paulsen JS O'Leary DS Ho BC 《Brain and cognition》2006,61(3):235-242
The prism adaptation test examines procedural learning (PL) in which performance facilitation occurs with practice on tasks without the need for conscious awareness. Dynamic interactions between frontostriatal cortices, basal ganglia, and the cerebellum have been shown to play key roles in PL. Disruptions within these neural networks have also been implicated in schizophrenia, and such disruptions may manifest as impairment in prism adaptation test performance in schizophrenia patients. This study examined prism adaptation in a sample of patients diagnosed with schizophrenia (N=91) and healthy normal controls (N=58). Quantitative indices of performance during prism adaptation conditions with and without visual feedback were studied. Schizophrenia patients were significantly more impaired in adapting to prism distortion and demonstrated poorer quality of PL. Patients did not differ from healthy controls on aftereffects when the prisms were removed, but they had significantly greater difficulties in reorientation. Deficits in prism adaptation among schizophrenia patients may be due to abnormalities in motor programming arising from the disruptions within the neural networks that subserve PL. 相似文献
38.
John Grimes Robin Rinehart Hillary Rodrigues John M Koller Elaine Craddock Ludo Rocher Will Sweetman Boyd H Wilson Edward C Dimock Thomas Forsthoefel Hal W French Timothy C Cahill William J Jackson John Powers Frederick M Smith Gavin Flood Lelah Dushkin Sheila McDonough Frank J Hoffman Karni Pal Bhati Anne E Monius Fred Dallmayr Marcia Hermansen Joseph A Bracken Carl Olson William P Harman Donatella Rossi Anna B Bigelow Jeffrey J. Kripal 《International Journal of Hindu Studies》1998,2(2):267-310
39.
The experiments compared the potencies of three different contingent time-out procedures for suppressing drinking in alcoholics, and also compared two different experimental methodologies for conducting such studies. In a residential research ward setting fourteen volunteer chronic alcoholics were given daily access to 17 alcoholic drinks provided that a minimum of 40 min elapsed between receiving successive drinks. Each drink contained 1 oz 95-proof ethanol in orange juice. During the baseline condition subjects were free to drink with no behavioral restrictions. However during the time-out conditions, specific behavioral restrictions were imposed on the subjects for the 40-min period following receipt of each drink. The results showed that Social time-out suppressed drinking to 71 per cent of baseline conditions, while Activity time-out and the combined Social and Activity time-out suppressed intake to 36 and 24 per cent, respectively. The study also demonstrated that similar experimental results were obtained when subjects were continuously exposed to the experimental conditions for a number of consecutive days. or intermittently exposed to different conditions in a mixed order over successive days. 相似文献
40.
智能技术为智能时代的工程心理学研究和应用提供了新的机遇。为此, 系统提出了智能时代工程心理学的工作框架。该工作框架包括工程心理学研究和应用的对象、核心问题空间、学科理念、研究重点、应用范围、方法等。智能时代的人机关系呈现出一种新的形式: 人机组队式的人机合作关系。“以人为中心的人工智能”应该是智能时代工程心理学的学科理念。针对智能技术, 近期工程心理学研究者开始开展围绕新型人机关系的理论框架和基本问题、人机组队中的心理结构和决策控制、人机交互等方面的研究工作。为有效支持智能系统的研发, 概括总结了一些工程心理学新方法和提升的方法。最后, 针对当前工程心理学所面对的一些挑战提出了具体的建议。 相似文献