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Forty subjects took part in a one-handed catching ask in which the period for which the mechanically projected tennis ball was illuminated in flight was varied systematically. Additionally, they were tested for (a) static visual acuity and (b) dynamic visual acuity, in which angular velocity was varied. As expected, both viewing period in the catching task and angular velocity in the acuity task were significant variables in performance. Correlation and principal-components analyses confirmed the findings of a previous experiment in that the correlated static visual acuity tasks were unrelated to both dynamic visual acuity (even when angular velocity was only 75 degrees /sec) and catching performance. Further, dynamic acuity and catching were related under the majority of the combinations, and most frequently at the highest angular velocity, a fact which suggested that the dynamic element in both tasks is the common factor. 相似文献
44.
The ethics of distress: Toward a framework for determining the ethical acceptability of distressing health promotion advertising
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Distressing health promotion advertising involves the elicitation of negative emotion to increase the likelihood that health messages will stimulate audience members to adopt healthier behaviors. Irrespective of its effectiveness, distressing advertising risks harming audience members who do not consent to the intervention and are unable to withdraw from it. Further, the use of these approaches may increase the potential for unfairness or stigmatization toward those targeted, or be considered unacceptable by some sections of the public. We acknowledge and discuss these concerns, but, using the public health ethics literature as a guide, argue that distressing advertising can be ethically defensible if conditions of effectiveness, proportionality necessity, least infringement, and public accountability are satisfied. We do not take a broad view as to whether distressing advertising is ethical or unethical, because we see the evidence for both the effectiveness of distressing approaches and their potential to generate iatrogenic effects to be inconclusive. However, we believe it possible to use the current evidence base to make informed estimates of the likely consequences of specific message presentations. Messages can be pre‐tested and monitored to identify and deal with potential problems. We discuss how advertisers can approach the problems of deciding on the appropriate intensity of ethical review, and evaluating prospective distressing advertising campaigns against the conditions outlined. 相似文献
45.
Ryan J. Fitzgerald Brittany F. Whiting Natalie M. Therrien Heather L. Price 《Applied cognitive psychology》2014,28(3):409-418
To date, research investigating the similarity among lineup members has focused on adult eyewitnesses. In the present research, children made identifications from lineups containing members of lower or higher similarity to a target person. In Experiment 1, following a live interaction, children's (6–14 years) correct identification rate was reduced in higher‐similarity relative to lower‐similarity lineups. In Experiment 2, children (6–12 years) and adults watched a video containing a target person. Again, higher‐similarity lineup members reduced children's correct identifications; however, similarity had no effect on adults' correct identification rate. Although children benefited from lower‐similarity lineups when the target was present, lower‐similarity lineups generally increased misidentifications of an innocent suspect when the target was absent. Thus, increasing similarity in lineups for children had a cost on target‐present lineups and a benefit on target‐absent lineups. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
46.
Wythe L. Whiting 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2013,20(2):141-157
The present study used attention operating characteristics (AOCs) to examine whether age differences existed in divided attention (DA) performance when both primary (cued recall) and secondary tasks (letter recall) were analyzed simultaneously. Additionally, to determine if age differences in DA might depend on the amount of elaborative processing required at study, participants either read (low elaboration) or generated (high elaboration) target words. AOC analyses indicated that performance was disrupted most when attention was divided at encoding versus retrieval, and dividing attention had a greater negative impact on older adults’ performance relative to younger adults’. Furthermore, the high elaboration condition was less affected by DA than the low elaboration condition for both age groups. The results indicate that although the ability to divide attention declines with age, some elaborative study strategies may be more resistant to DA effects for both younger and older adults. 相似文献
47.
Male Ss (N=48) from a university population attempted single-handed catches of lawn tennis balls delivered by a mechanical projection machine. The within-and between-S variables in a split-plot factorial design were the period for which the ball was illuminated (VP) and the subsequent period of occlusion (OP). Both variables and their interaction were significant sources of variation. Generally the effect of VP diminished as OP was extended. This was discussed in terms of (1) information processing time and (2) motion prediction. With respect to the first issue, the most important variable was not VP, but a composite term VP + OP. On the second issue, support was provided for an hypothesis to account for prediction error raised in a previous study. 相似文献
48.
Recent research has focused on the Internet and relationships; however, little attention has been given to the specific role of social networking sites in relationship betrayal. Exploring the processes related to discovery of Facebook infidelity behaviors adds another layer to understanding Internet infidelity and highlights the behaviors unique to Facebook infidelity. Stories about cheating (N = 90), taken from the website FacebookCheating.com were analyzed using grounded theory methodology to create a process model of discovery. Researchers sought to answer four questions: (1) What is the experience of nonparticipating partners when their partners have engaged in infidelity behaviors on Facebook? (2) What are the basic social processes that occur when discovering the infidelity behaviors? And, (3) What are the basic psychological processes that occur? (4) What similarities or differences exist between the current research on offline and online infidelity and the process model from the current study? The categories are arranged in a process model, which depicts these processes as well as the emotional experience of the nonparticipating partner. The model highlights important phases through which the nonparticipating partner cycled following the discovery of the infidelity. These include appraising the boundary damage, acting on the appraisal, and making a decision about the relationship. Suggestions for clinical intervention based on this process are provided. Future research implications are also discussed. 相似文献
49.
Erica J. Wilkins Jason B. Whiting Marlene F. Watson Jody M. Russon Allena M. Moncrief 《Contemporary Family Therapy》2013,35(1):14-28
Marriage and family therapists grapple with the intersection of societal influence and African American clients’ presenting problems. Questions include: what impact has the historical trauma of slavery had on African Americans and what are the clinical implications of this trauma? This paper reviews the literature on the various residual effects of slavery (RES) within the African American community. A case vignette and a broad discussion of therapeutic techniques will be used to highlight the clinical implications of RES. 相似文献
50.
H. T. A. Whiting 《Journal of motor behavior》2013,45(4):486-491
The relationship between skill level, vision, and proprioception in simple one-handed catching has recently been researched by Fischman and Schneider (1985). The parts of their work addressed to the necessity of being able to see the hand for optimal performance are critically evaluated in the light of earlier published studies, and other methodological and interpretative problems are signalled. 相似文献