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11.
This study examined the roles of hunger, food craving and mood in the binge-eating episodes of bulimic patients, and identified the critical factors involved in the processes surrounding binge-eating episodes that follow cravings. This was a prospective study of the binge-eating behaviour of 15 women with bulimia nervosa. The participants used food intake diaries and Craving Records to self-monitor their nutritional behaviour, hunger levels and affective state. Cravings leading to a binge were associated with higher tension, lower mood and lower hunger than those cravings not leading to a binge. Levels of tension and hunger were the critical discriminating variables. The findings of the study support empirical evidence and models of emotional blocking in binge-eating behaviour and challenge the current cognitive starve-binge models of bulimia. The role of food cravings in the emotional blocking model is discussed in terms of a classically conditioned motivational state. Implications for treatment are addressed. 相似文献
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Complex regional pain syndrome (CRPS) is difficult to diagnose and is characterised by burning pain in one or more limbs. Treatment is palliative not curative and focuses on improving function. This requires patients to make long-term changes to their behaviour. As with all such regimens, adherence is often poor. This study explored the lived experience of 10 patients who had returned home after completing a two-week in-patient treatment programme. The interviews focused on how they coped with the transition from hospital to home, and on the things that they considered had facilitated or hindered this transition. Battling for control was an overarching theme that connected the four superordinate themes: 'gaining momentum' that facilitated the implementation of treatment advice, 'distance from the pool of expertise' that detailed the barriers to adherence experienced; 'It helped me realise it was not all in my head' that detailed a facilitative process, and the 'nag list' that was a technique patients' used to garner support. This article offers insights into the transition experience. A key outcome is the recognition of the need to better prepare patients for their transition back home. 相似文献
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Few studies have explored the effects of fixed‐time (FT) reinforcement on escape‐maintained behavior of students in a classroom setting. We measured the effects of an FT schedule on the disruptive and appropriate academic behaviors of 2 junior high students in a public school setting. Results demonstrated that FT escape from tasks resulted in a substantial decrease in disruptive behavior and an increase in time engaged in tasks for both participants. 相似文献
16.
Correlation Weights in Multiple Regression 总被引:1,自引:0,他引:1
A general theory on the use of correlation weights in linear prediction has yet to be proposed. In this paper we take initial
steps in developing such a theory by describing the conditions under which correlation weights perform well in population
regression models. Using OLS weights as a comparison, we define cases in which the two weighting systems yield maximally correlated
composites and when they yield minimally similar weights. We then derive the least squares weights (for any set of predictors)
that yield the largest drop in R
2 (the coefficient of determination) when switching to correlation weights. Our findings suggest that two characteristics of
a model/data combination are especially important in determining the effectiveness of correlation weights: (1) the condition
number of the predictor correlation matrix, R
xx
, and (2) the orientation of the correlation weights to the latent vectors of R
xx
. 相似文献
17.
William S. Waller Mark F. Zimbelman 《Organizational behavior and human decision processes》2003,91(2):254-268
This paper delineates a bridging strategy for generalizing a theoretical proposition about human judgment from laboratory to field settings. This strategy encompasses experimental and archival methods, emphasizing each method’s complementary rather than competitive advantage. Basic experiments that use generic tasks and settings, and novice subjects, contribute empirical tests that maximize internal validity. Given a target area in the “real world” for generalizing the proposition, applied experiments that use tasks and settings with greater mundane realism, and professional subjects from the target area, contribute replicating tests that balance internal and external validity. As a complement to experimentation, archival research adds value by testing observable implications of the proposition in field settings. We relate the bridging strategy to judgment research on the dilution effect (i.e., the presence of nondiagnostic cues, when processed with diagnostic cues, causes judges to under-weigh the diagnostic cues) in psychology and applied areas. Finally, we contribute an archival data analysis that uncovers indirect evidence, or a cognitive footprint, of the dilution effect in a professional judgment setting where social and economic mechanisms potentially discipline systematic error. 相似文献
18.
Bruce N. Waller 《The Southern journal of philosophy》1987,25(2):229-238
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Effects of chlorpromazine on appetitive and aversive components of a multiple schedule 总被引:2,自引:2,他引:0
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Marcus B. Waller Patricia F. Waller 《Journal of the experimental analysis of behavior》1962,5(2):259-264
A multiple schedule having both an appetitive and an avoidance component was maintained in two dogs to create a complex behavioral base line for observing the effects of chlorpromazine. Both soluble and “Spansule” chlorpromazine generated similar functions relating drug dose to measures of behavioral output. Although the dose ranges and the drugging procedures differed markedly for the different preparations of CPZ, the functions generated were comparable. There was no evidence that chlorpromazine had a differential depressing effect as a function of type of reinforcement. At low doses, rates of responding on the food-reinforced components increased slightly, whereas rates on the avoidance components remained relatively unchanged. At higher doses, both components showed an approximately equal depression of responding. These results are discussed with reference to some of the logical and experimental difficulties inherent in making comparisons across components of a multiple schedule and across schedules in general. 相似文献