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191.
Sascha R.A. Meyer Pauline E.J. Spaan Leo Boelaarts Rudolf W.H.M. Ponds Ben Schmand 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2016,23(5):566-577
Repeated measurements of episodic memory are needed for monitoring amnestic mild cognitive impairment (aMCI) and mild Alzheimer’s disease (AD). Most episodic memory tests may pose a challenge to patients, even when they are in the milder stages of the disease. This cross-sectional study compared floor effects of the Visual Association Test (VAT) and the Rey Auditory Verbal Learning Test (RAVLT) in healthy elderly controls and in patients with aMCI or AD (N = 125). A hierarchical multiple regression analysis was used to examine whether linear or quadratic trends best fitted the data of cognitive test performance across global cognitive impairment. Results showed that VAT total scores decreased linearly across the range of global cognitive impairment, whereas RAVLT total scores showed a quadratic trend, with total scores levelling off for 90% of aMCI patients and 94% of AD patients. We conclude that the VAT shows few if any floor effects in patients with aMCI and mild AD and is therefore a potentially promising cognitive test for monitoring episodic memory impairment. 相似文献
192.
Decision Pattern Analysis as a General Framework for Studying Individual Differences in Decision Making
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This paper investigated decision pattern analysis (DPA) as a general and standard framework for studying individuals' consistent decision making behavior within and between contexts. DPA classifies decisions on the basis of judgement accuracy and the goal orientation of the decided‐upon action. Over repeated decisions, patterns of individuals' decision behavior are described by five variables: competence, optimality, recklessness, hesitancy and decisiveness. A fictitious medical decision making test and three standard cognitive ability tests (extended with confidence ratings and a ‘submit answer for marking’ decision) were used to investigate the psychometric properties of these DPA variables. Internal consistency of the decision patterns ranged from good to excellent. Convergent validity was assessed via cognitive abilities, metacognitive confidence and a control criterion imposed on confidence that determines the decision to be made: the point of sufficient certainty. Personality variables were included to assess discriminant validity. As hypothesised, cognitive abilities showed positive correlations with competence and optimality. High confidence, low points of sufficient certainty and a greater discrepancy between them were associated with higher decisiveness and recklessness, and lower hesitancy. Personality measures showed mixed and generally weak correlations with the DPA variables. These convergent and discriminant results also held after controlling for all variables in regression. The results provide preliminary psychometric support for DPA as a general framework of behavioral decision making. DPA has the potential to be exploited in many contexts for uses that, to date, have been unachievable in a psychometrically valid manner. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
193.
E. A. Lunzer C. Harrison M. Davey 《Quarterly journal of experimental psychology (2006)》1972,24(3):326-339
Three experiments were designed to investigate the failure of intelligent adults to solve an apparently simple problem of formal reasoning devised by Wason. Both the mode of presentation and the type of material reduced the difficulty of the problem, while retaining its essential form. However, success on the original problem remained at a low level, even when subjects had attempted an easier version and had been given an explanation.
These results enable one to reject a “strong” formulation of Piaget's theory of formal reasoning. A “weaker” formulation is suggested as a basis for further research. 相似文献
These results enable one to reject a “strong” formulation of Piaget's theory of formal reasoning. A “weaker” formulation is suggested as a basis for further research. 相似文献
194.
Two-component schedules of differential-reinforcement-of-low-rate were presented, where the contingencies specified separately two minimum interresponse times, t1 and t2, required for reinforcement, depending on whether the interresponse time was initiated by, in one case, a reinforced response (t1) or, in the other, a nonreinforced response (t2). A distinctive pattern of responding developed on each of the two contingencies. Duration of an interresponse time approximated t1 when the t1 contingency was in effect, and t2 when the t2 contingency was in effect. This relationship persisted even when t2 was shorter than t1, and responding at a higher rate on the t1 contingency would have greatly increased the rate of reinforcement. Increasing the value of t2 resulted in both longer interresponse times on the t1 contingency, and a higher probability of a response-burst on those occasions when the contingency switched from t1 to t2. The results indicated that both reinforced and nonreinforced responses functioned as discriminative events in determining the duration of following interresponse times. 相似文献
195.
The value of token reinforcement in the instatement and shaping of fluency was examined in an intensive treatment program for adult stutterers. Experiment 1 examined the effect of removing the tangible back-up reinforcers for the token system and found that clients' performance in the program was equally good with or without these back-up reinforcers, suggesting that a strict token economy may not be crucial to rapid progress through treatment. Experiment 2 compared contingent and noncontingent token reinforcement, while controlling for some variables that may have confounded the results of earlier research, and found no difference in clients' performance. Experiment 3 examined the effect of the entire removal of token reinforcement. Performance was found to be no worse under a “no tokens” system than under a system of tokens with back-up reinforcers. It is argued that in a highly structured treatment program where many other reinforcers are operating, token reinforcement may be largely redundant. Clinical and theoretical implications of the findings are discussed. 相似文献
196.
Two experiments were conducted to investigate the effect of an omission contingency on behavior related to and characterizing autoshaped lever contacts in the rat. In Experiment I an omission contingency imposed on autoshaped lever contacts forceful enough to produce a press (.078N) resulted in a significant decrease in lever presses, but had no effect on frequency of lever touches (contacts of insufficient force to produce a press) or rate of food tray entry during lever presentation. In contrast, rats which received a similar number of lever-food pairings, but whose behavior had no programmed consequences (yoked control subjects), showed an increase in lever press rate, a significant decrease in rate of food tray entry, and no change in rate of lever-touches. In Experiment II, the effect of a similar omission contingency on the topography of lever contact responses was investigated. Prior to omission training subjects contacted the lever primarily by pawing it. Following omission training this behavior was suppressed, with a subsequent increase in lever contacts characterized as nosing. Yoked control subjects showed no significant changes in lever contact topography. The results indicate that (1) an omission contingency does not simply eliminate wholesale those topographies which incur the contingency but produces subtle adaptive changes in lever contact topography; and (2) the nature of the autoshaped response in the rat does not appear to be rigid enough to depend solely upon the nature of the unconditioned stimulus or the conditioned stimulus, but can also be determined by the relationships existing between the animal's behavior and these stimuli. 相似文献
197.
This paper introduces the ‘worried well’ as the last in a long line of categories which define people who have concerns about their health. In this case, people who are convinced they have AIDS. The paper describes: 1) their presentation, 2) the main dificulties involved in treatment, and 3) suggests a step wise model for counselling the ‘worried well’. 相似文献
198.
Re-evaluation counselling (often known as co-counselling, or simply RC) has recently been described as an ‘innovative’ form of therapy, despite the fact that it has existed for over forty years. It has also been suggested that it is, or is becoming, a psychotherapy ‘cult.’ This paper discusses the key theoretical ideas of re-evaluation counselling (RC) and assesses the extent to which some of these ideas could enable unscrupulous therapists to engineer artificial consent and impose their own belief systems on clients. RC's strong reliance on group based activities is also explored, and the extent to which this facilitates unthinking conformity is considered. Finally, guidelines are discussed which enable therapists and would-be clients to assess more clearly the potentially negative effects of involvement in groups such as RC. 相似文献
199.
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