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381.
Three participants with moderate to profound mental retardation were exposed to choices between an immediate small amount and a delayed larger amount of a preferred reinforcer. All participants initially showed a relatively high preference for the smaller reinforcer, suggesting impulsive choice making. However this preference reversed, suggesting self-control, when the larger reinforcer was available immediately and, over time, its delay was gradually increased. Results highlight the potential utility of incorporating concurrent activities into self-control training paradigms. 相似文献
382.
Nyberg L Maitland SB Rönnlund M Bäckman L Dixon RA Wahlin A Nilsson LG 《Psychology and aging》2003,18(1):149-160
Confirmatory factor analysis was used to test competing models of declarative memory. Data from middle-aged participants provided support for a model comprised of 2 2nd-order (episodic and semantic memory) and 4 1st-order (recall, recognition, fluency, and knowledge) factors. Extending this model across young-old and old-old participants established support for age invariance. Tests of group differences showed an age deficit in episodic memory that was more pronounced for recall than for recognition. For semantic memory, there was an increase in knowledge from middle to young-old age and thereafter a decrease. Overall, the results support the view that episodic memory is more age sensitive than semantic memory, but they also indicate that aging has differential effects within these 2 forms of memory. 相似文献
383.
Peter Dixon 《Revue canadienne de psychologie expérimentale》2003,57(3):189-202
Null hypothesis significance tests are commonly used to provide a link between empirical evidence and theoretical interpretation. However, this strategy is prone to the "p-value fallacy" in which effects and interactions are classified as either "noise" or "real" based on whether the associated p value is greater or less than .05. This dichotomous classification can lead to dramatic misconstruals of the evidence provided by an experiment. For example, it is quite possible to have similar patterns of means that lead to entirely different patterns of significance, and one can easily find the same patterns of significance that are associated with completely different patterns of means. Describing data in terms of an inventory of significant and nonsignificant effects can thus completely misrepresent the results. An alternative analytical technique is to identify competing interpretations of the data and then use likelihood ratios to assess which interpretation provides the better account. Several different methods of calculating the likelihood ratios are illustrated. It is argued that this approach satisfies a principle of "graded evidence," according to which similar data should provide similar evidence. 相似文献
384.
It has been suggested that affective states can guide higher level cognitive processes and that such affective guidance may
be particularly important when real-life decisions are made under uncertainty. We ask whether affect guides decisions in a
laboratory task that models real-life decisions under uncertainty. In the Iowa gambling task (IGT), participants search for
monetary payoffs in an uncertain environment. Recent evidence against an affective guidance interpretation of the IGT indicates
a need to set a standard for what counts as evidence of affective guidance. We present a novel analysis of IGT, and our results
show that participants’ galvanic skin response (GSR) reflects an affective process that precedes and guides cognition. Specifically,
prior to participants’ knowledge of the optimal strategy, their GSRs are significantly higher when they are about to select
from a bad deck, relative to a good deck, and this difference in GSR is correlated with a behavioral preference for the good
deck. 相似文献
385.
Gambling behavior often involves making choices between concurrently available game options. With regard to slot machine gambling,
multiple games allow for choices to be made with respect to which game to play. The authors of the present study used a slot
machine simulation created in Visual Basic. NET to examine gambling preference. The specific question addressed was whether
gamblers prefer a smaller payout more often (averaging around every 10 spins) over a larger payout less often (averaging around
every 50 spins). Two types of reinforcement were examined during the study: frequency of payouts and the amount of credits
won. The results indicate that participants had a preference for a slot machine with the more frequent payout as opposed to
one with more intermittent payout. These results support existing literature on theories of choice and provide a step toward
understanding human gambling behavior. 相似文献
386.
This study assessed psychological adjustment and quality of life relative to population-based norms and knowledge about hereditary
hemochromatosis in a sample of 101 patients who attended a hemochromatosis clinic. Participants were assessed prior to their
clinic visit, and two weeks and 12 months after attendance, using self-administered questionnaires. Mean Mental Health Component
Scores from the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36) (45.3, 95% CI 43.2, 47.4) were as compromised
as those found amongst stroke victims (45.9, 95% CI 42.8, 49.0) who had participated in a national health survey. Recall of
the genetic testing result was less than optimal, in that only 69.3% of those with genetic testing results knew whether they
carried one or two mutations. This study demonstrates that patients would benefit from routine assessment of psychological
distress and referral to mental health professionals of those whose levels of distress suggest a need for clinical intervention.
Results also show that patients may benefit from strategies aimed at improving recall of genetic testing results. 相似文献
387.
Identification deficits were investigated in ELM, a temporal lobe stroke patient with category-specific deficits. We replicated previous work done on FS, a patient with category specific deficits as a result of herpes viral encephalitis. ELM was tested using novel, computer generated shapes that were paired with artifact labels. We paired semantically close or disparate labels to shapes and ELM attempted to learn these pairings. Overall, ELM's shape-label confusions were most detrimentally affected when we used labels that referred to objects that were visually and semantically close. However, as with FS, ELM had as many errors when shapes were paired with the labels "donut," "tire," and "washer" as he did when they were paired with visually and semantically close artifact labels. Two explanations are put forth to account for the anomalous performance by both patients on the triad of donut-tire-washer. 相似文献
388.
Karen Nohelty Adam D. Hahs Kristine A. Rodriguez Hanna Rue Michael J. Cameron Dennis R. Dixon 《Behavioral Interventions》2023,38(3):590-610
During the COVID-19 pandemic, applied behavior analysis services for many autistic individuals were transitioned to telehealth. The current study assessed caregiver-reported quality of life (QoL) and social validity for families of autistic children receiving only telehealth services (n = 96) or a combination of telehealth and in-person services (n = 173). Barriers to the telehealth experience were analyzed via an ANOVA, and the impact of funding source was analyzed using an independent samples t-test. Caregivers reported benefit across QoL and social validity items, with scores ranging from 3.31 to 4.44 (1 = least benefit, 5 = most benefit). While many caregivers reported no barriers regarding technology (44.61%), childcare (69.52%), and employment (64.68%), the presence of those barriers significantly impacted QoL and social validity scores. Funding source was not found to have a significant impact. Overall, caregivers found value in their child's telehealth services. Clinicians have an obligation to mitigate barriers to ensure the success of the intervention. 相似文献
389.
The present study examined the use of a progressive delay procedure to teach self-control to two groups of dually diagnosed adults. When given a choice between an immediate smaller reinforcer and a larger delayed reinforcer, both groups chose the smaller reinforcer during baseline. During treatment, progressive increases in work requirements for gaining access to a larger reinforcer resulted in both groups selecting larger delayed reinforcers. The results are discussed with respect to increasing cooperative work behavior and self-control. 相似文献
390.
Recent work suggests that hemispheric language lateralization might be related to the fine-grained temporal discriminations that are required for linguistic processing (Nicholls, 1996). Studies concerning tactile processing have also shown a significant left-hemisphere (L-H) advantage for tactile gap detection (Nicholls & Whelan, 1997). We hypothesized that language and tactile processing are both preferentially processed by the left hemisphere because it is specialized for tasks requiring fine-grained temporal resolution. Thirty-two participants (16 right and 16 left handers) were tested for both linguistic processing (using the Fused Dichotic Words Test (FDWT)) and tactile gap detection. Both right and left handers showed a significant L-H advantage for both language processing and tactile gap detection. The present study supports recent claims that language lateralization is attributable to the left hemisphere's better suitability to process tasks that require fine-grained temporal resolution. 相似文献