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331.
332.
Witts' (2018) review of the peer-reviewed research on the PEAK-Direct Training Module (Dixon, 2014) yielded a divergent conclusion from that of previous reviews (Reed & Luiselli, 2016; Dixon, Belisle, McKeel et al., 2017). Witts advocates for skepticism of this research due to methodological shortcomings, hyperclaiming of results, and inappropriate statistical testing procedures. We identified 30 criticisms in Witts' review, respond to each, and argue that all but 2 (7%) contain untrue assumptions (7, 23%), are not novel (5, 17%), are logically invalid (7, 23%), or are more appropriately framed as criticisms of applied behavior analytic research more generally (9, 30%). The two criticisms that support Witts' purpose in writing his review are minor and not fatal. We discuss all of Witts' criticisms both specifically and broadly to illustrate that most of his suggestions about applied behavior analytic research may actually serve to hinder progress in a discipline moving toward larger-scale research. 相似文献
333.
The present study examined the temporal characteristics of play exhibited by recreational slot machine players. 12 women (M = 24 yr., range 22-28) played a computerized version of a slot machine with probability of payoff, i.e., a winning spin, ranging from .2 to .6. Intertrial intervals or the time between the termination of one trial to the initiation of the next trial varied within subjects as a function of wins and losses. Winning trials were associated with larger intertrial intervals and losing trials with smaller intertrial intervals for 10 of the 12 women. No differences were found across probability levels between subjects. Results are discussed in terms of the post-reinforcement pause that occurs on specific schedules of reinforcement. 相似文献
334.
335.
Social Support Mediates Loneliness and Human Herpesvirus Type 6 (HHV-6) Antibody Titers 总被引:1,自引:0,他引:1
Denise Dixon Stacy Cruess Kristin Kilbourn Nancy Klimas Mary Ann Fletcher Gail Ironson Andrew Baum Neil Schneiderman Michael H. Antoni 《Journal of applied social psychology》2001,31(6):1111-1132
The current study investigated the impact of a severe environmental stressor and the role that declining social integration played in mediating its effect on loneliness and immune status. Increased loneliness and decreased social support in the months following the stressor (storm) were significantly associated with increased HHV-6 antibody liters, reflecting poorer control over the virus. Poorer social integration mediated the relationship between loneliness and HHV-6, even after controlling for nonspecific polyclonal B-cell activation, disease status (CD3+CD4+ cell counts), living arrangements, acute social losses (bereavement), and potential disruptions in social-support resources. These findings suggest that specific elements of social support may explain the oft-noted negative effects of loneliness on the immune system, and generalized to a medically vulnerable population. 相似文献
336.
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
337.
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
338.
V Di Lollo P Dixon 《Journal of experimental psychology. Human perception and performance》1992,18(4):1089-1100
In partial-report experiments, an array of stimuli is displayed briefly, followed by a probe indicating the items to be reported. When exposure duration of the array is increased, 2 contrasting outcomes have been found: Some experiments find that performance improves (direct-duration effect); others find that it deteriorates (inverse-duration effect). The objective here was to identify the reasons for the discrepant results. This was done by investigating the roles played by 5 factors that differed between the 2 sets of contrasting studies. An inverse-duration effect was obtained in each of 6 experiments; its magnitude was affected by retinal eccentricity and by the number of items denoted by the probe. The effect was independent of array configuration and of number of items in the array. The direct-duration effect was shown to arise from a confounding of exposure duration and brightness. 相似文献
339.
Roger A. Dixon Diane P. Fox Lee Trevithick Rebecca Brundin 《Journal of Adult Development》1997,4(4):195-208
Collaborative problem solving occurs in situations in which two or more individuals cooperate in appraising, representing,
and solving a variety of cognitive tasks. Collaborative groups are the context for much everyday cognitive activity in adulthood.
Collaboration has been explored as a means through which older adults may maintain high levels of performance, perhaps compensating
for individual-level cognitive and neurological decline. This study explored the effects of collaboration (group size) and
adult age on solving both fixed- and unrestricted-alternatives 20 Questions tasks. Younger (M=24.3 years) and older (M=67.9 years) adults were randomly assigned to one of three homogeneous group size conditions: individuals, dyads, and tetrads.
Results indicated some dissociation between individual-level performance (poorer for older adults) and collaborative performance
(better for older adults). For the fixed-alternatives task, older adults produced more of the relatively inefficient hypothesis-scanning
questions than did younger adults. In contrast, older collaborative groups produced more of the efficient constraint-seeking
questions than hhpothesis-scanning questions, and an amount equivalent to that of younger adults. Overall performance for
the difficult unrestricted-alternatives task was less efficient for both younger and older adults. The roles of task type,
group characteristics, and adult age are discussed. 相似文献
340.
The ethical codes of the professional engineering bodies identify the responsibilities of the engineer. Of equal importance
to the codes are the virtues which enable the engineer to fulfil these responsibilities. After briefly reviewing such virtues
this paper argues that the systematic learning of virtues is possible in a formal way through learner centred learning. Central
to this learning experience is the development of integrity which focuses the other major virtues and enables reflection upon
them. A review of undergraduate courses suggests how this can be achieved.
Rev’d. Dr. Simon Robinson is a lecturer in the Centre for Business and Professional Ethics at the University of Leeds. 相似文献