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71.
T. James Matthews Claudia J. Koblenz Jeffrey I. Werden 《Behavior research methods》1984,16(2):230-233
Tactics of design are described for programs to be used by chronic psychiatric patients on an accounting task in the maintenance of records of token economies at Creedmoor Psychiatric Center. To address the patients’ cognitive, motoric, and motivational deficiencies, special attention was paid to display features, branching formats, error detection, feedback, and keyboard utilization. 相似文献
72.
In a free recall task, homogeneity of semantic reference and strong associative connections facilitated the recall after a twenty second filled interval of lists of 18 words. Facilitation in the recall of lists consisting of three sets of six related words when compared with six sets of three related words was also obtained. The organisation present in the recalled sequences is reported using various clustering measures and differences between the measures are indicated and discussed. Difficulties in the use of such measures in evaluating an hypothesis about the relationship between recall and organisation are illustrated and the general theoretical issue of selecting between alternative measures of organisation is considered. 相似文献
73.
A class of simple problem solving tasks requiring fast accurate solutions is introduced. In an experiment subjects memorized a mapping rule represented by lists of words labeled by cue words and made true/false decisions about conjunctions of propositions of the form “Y is in the list labeled by X”, written “X → Y”. Response times are analyzed using a “stage modeling” technique where problem solving algorithms are composed using a small set of psychological operations that have real time characteristics specified parametrically. The theoretical analysis shows that response time performance is adequately described in terms of the sequential application of elementary psychological operations. Unexpectedly, it was found that the proposition “X → YandX → Z” was verified as quickly as the apparently simpler “X → Y”. A case is presented for the modeling technique as applied to memory and problem solving tasks in terms of theoretical parsimony, statistical simplicity, and flexibility in investigative empirical research. Suggestions are made as to possible theoretical relations among fast problem solving, more complex and slower problem solving, and research in fundamental memory processes. 相似文献
74.
Type A behavior pattern, parental history of hypertension, and cardiovascular reactivity in college males 总被引:1,自引:0,他引:1
M T Allen K A Lawler V P Mitchell K A Matthews C J Rakaczky W Jamison 《Health psychology》1987,6(2):113-130
Two risk factors for cardiovascular disorders, parental history of hypertension and the Type A behavior pattern, were investigated concurrently with respect to cardiovascular reactivity to challenging situations. Sixty-four college males were given both the Structured Interview (SI) and Jenkins Activity Survey (JAS) for the Type A behavior pattern and a family health questionnaire to determine parental history of hypertension. The students were monitored for blood pressure (BP), heart rate (HR), and pulse transit time (PTT) response to four tasks: cold pressor, isometric handgrip exercise, a reading comprehension task, and backwards digit span. Type As based on SI classification had significantly higher HR levels across all tasks than did Type Bs, as well as higher diastolic BP levels in the cold pressor task. No main effects for Type A-B using JAS classification were found. Positive parental history students had higher HR and shorter PTT levels across all the tasks. Type A and parental history did interact in a limited way on some tasks, but the interactions were also dependent on the Type A classification used. 相似文献
75.
Instructed versus shaped human verbal behavior: Interactions with nonverbal responding 总被引:7,自引:7,他引:0
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Catania AC Matthews BA Shimoff E 《Journal of the experimental analysis of behavior》1982,38(3):233-248
Undergraduate students' presses on left and right buttons occasionally made available points exchangeable for money. Blue lights over the buttons were correlated with multiple random-ratio random-interval components; usually, the random-ratio schedule was assigned to the left button and the random-interval to the right. During interruptions on the multiple schedule, students filled out sentence-completion guess sheets (e.g., The way to earn points with the left button is to...). For different groups, guesses were shaped with differential points also worth money (e.g., successive approximations to “press fast” for the left button), or were instructed (e.g., Write “press slowly” for the left button), or were simply collected. Control of rate of pressing by guesses was examined in individual cases by reversing shaped or instructed guesses, by instructing pressing rates, and/or by reversing multiple-schedule contingencies. Shaped guesses produced guess-consistent pressing even when guessed rates opposed those characteristic of the contingencies (e.g., slow random-ratio and fast random-interval rates), whereas guesses and rates of pressing rarely corresponded after unsuccessful shaping of guesses or when guessing had no differential consequences. Instructed guesses and pressing were inconsistently related. In other words, when verbal responses were shaped (contingency-governed), they controlled nonverbal responding. When they were instructed (rule-governed), their control of nonverbal responding was inconsistent: the verbal behavior sometimes controlled, sometimes was controlled by, and sometimes was independent of the nonverbal behavior. 相似文献
76.
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78.
Wang CM Almsherqi ZA McLachlan CS Matthews S Ramachandran M Tay SKh Deng Y 《Stress (Amsterdam, Netherlands)》2011,14(1):66-72
Associations between uncoupling protein (UCP) expression and functional changes in myocardial mitochondrial bio-energetics have not been well studied during periods of starvation stress. Our aim was to study the effects of acute starvation, for 24 or 48 h, on combined cardiac mitochondrial function and UCP expression in mice. Isolated heart mitochondria from female mice starved for 48 h compared to that from mice fed revealed a significantly (p < 0.05) decreased adenosine diphosphate-to-oxygen ratio, a significantly increased proton leak and an increased GTP inhibition on palmitic acid-induced state 4 oxygen consumption (p < 0.05). These bio-energetic functional changes were associated with increases in mitochondrial UCP2 and UCP3 protein expression. In conclusion, our findings suggest that increased UCP2 and UCP3 levels may contribute to decreased myocardial mitochondrial bio-energetic function due to starvation. 相似文献
79.
Use of unmanned aerial vehicles (UAVs) is an increasingly important element of military missions. However, controlling UAVs
may impose high stress and workload on the operator. This study evaluated the use of the RoboFlag simulated environment as
a means for profiling multiple dimensions of stress and workload response to a task requiring control of multiple vehicles
(robots). It tested the effects of two workload manipulations, environmental uncertainty (i.e., UAV’s visual view area) and
maneuverability, in 64 participants. The findings confirmed that the task produced substantial workload and elevated distress.
Dissociations between the stress and performance effects of the manipulations confirmed the utility of a multivariate approach
to assessment. Contrary to expectations, distress and some aspects of workload were highest in the low-uncertainty condition,
suggesting that overload of information may be an issue for UAV interface designers. The strengths and limitations of RoboFlag
as a methodology for investigating stress and workload responses are discussed. 相似文献
80.
Indecent medicine: in defense of the absolute prohibition against physician participation in torture
Matthews RS 《The American journal of bioethics : AJOB》2006,6(3):W34-W44
In a recent article, Gross (2004) argues that physicians in decent societies have a civic duty to aid in the torturing of suspected terrorists during emergency conditions. The argument presupposes a communitarian society in which considerations of common good override questions of individual rights, but it is also utilitarian. In the event that there is a ticking bomb and no other alternative available for defusing it, torture must be used, and physicians must play their part. In an earlier article, Jones (1980) also argues in favour of physician participation in torture, going so far as to enthusiastically endorse the allocation of research resources as well to ensure that the ability to meet emergency situations is as efficient as scientifically possible. I argue against both these views and defend the absolute prohibition against torture generally, and against any participation by physicians in particular. I show that these arguments are incompatible with liberal or decent societies, and that the institutional requirements for making torture effective would constitute an unacceptable degradation both of medical ethics and practice, as well as of political institutions in general. 相似文献