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61.
Patients with mild Alzheimer's disease (AD) display a greater tendency to endorse unstudied items as "old" on memory tests than healthy older adults. This liberal response bias may result in mistaken beliefs about the completion of common tasks. This research attempted to determine whether it was possible to shift the response bias of mild AD patients to be more conservative on a recognition memory test through behavioral intervention. Patients with mild AD and matched controls were evaluated with two almost identical paradigms, separated by about one week. For each session, 30 words were studied and 60 words (half studied, half novel) were shown at test. During one session participants were told that 30% of words were old, and at the other session that 70% were old. We found that both groups were able to shift their response bias between the two conditions. That patients with mild AD were able to successfully shift their response bias demonstrates that--despite their overall liberal response bias and poor memory relative to controls--one component of metamemorial ability is preserved in patients with mild AD. 相似文献
62.
I. Lewis B. Watson K.M. White 《Transportation Research Part F: Traffic Psychology and Behaviour》2008,11(6):403-417
Drawing upon the multiple roles of affect posited by Elaboration Likelihood Model, the current paper examines the effectiveness of message-relevant affect. Specifically, humourous and fear-evoking anti-drink driving messages are examined in terms of perceptions of relative influence on self and others (i.e., the third-person effect) and their performance on a range of persuasion outcomes. The influence of involvement, response efficacy, and gender on persuasion outcomes is also examined. Participants (N = 201) viewed two advertisements and completed two questionnaires: the first, assessed pre-exposure attitudes and behaviour and immediate-post exposure attitudes and intentions; the second, 2–4 weeks later, assessed attitudes and behaviour. The results revealed, as predicted, interactions of the key variables and evidence of the greater persuasiveness of negative appeals immediately after exposure whilst greater improvement of positive appeals over time. The findings highlight the importance of continuing the exploration of positive appeals as a persuasive alternative to negative appeals. 相似文献
63.
Jennifer P. Bott Matthew S. O’Connell Mano Ramakrishnan Dennis Doverspike 《Journal of business and psychology》2007,22(2):123-134
For practitioners, the possibility of faking on personality tests has potential implications that are much broader than those
captured by current theoretical debates over criterion-related validity, factor structure, or psychological processes. One
unexplored potential impact of response distortion involves the pass rates associated with applying cutoff scores developed
using a concurrent validation design to applicant samples. This practitioner-oriented paper compared applicant and incumbent
scores on three personality dimensions and uncovered significant standardized group differences. These differences greatly
influenced pass rates for three different selection models, which impacted expected utility of the selection system. Potential
solutions for practitioners are provided, along with recommendations for future research in this area.
An earlier version of this paper was presented at the annual meeting of the Society for Industrial and Organizational Psychologists
in Orlando, Florida. 相似文献
64.
Nippak PM Mendelson J Muggenburg B Milgram NW 《Neurobiology of learning and memory》2007,87(4):610-623
We examined the benefits of a broad spectrum antioxidant diet and enrichment comprised of physical exercise, environmental stimulants and cognitive testing, on spatial memory performance in beagle dogs. Both aged (N=48) and young (N=16) beagle dogs (Canus familiaris) were tested yearly on a three-component delayed non-match to position spatial task for three consecutive years. The results showed that young enriched animals acquired the task in fewer sessions, made fewer errors, responded slower and made fewer positional responses, compared to aged enriched animals. An analysis restricted to aged animals revealed that antioxidant administration and enrichment resulted in fewer errors, slower responses and decreased positional responses, particularly in Year 3. Finally, cohort differences emerged, which exemplify the significance of early environmental intervention. Aged dogs that were housed with other animals and exposed to an outdoor environment in early development displayed greater benefits from both interventions. These findings indicate that long-term dietary intervention and enrichment can buffer age-associated cognitive decline. 相似文献
65.
This research aimed to investigate the time course effect of a moderate steady-state exercise session on response execution and response inhibition using a stop-task paradigm. Ten participants performed a stop-signal task whilst cycling at a carefully controlled workload intensity (40% of maximal aerobic power), immediately following exercise and 30 min after exercise cessation. Results showed that moderate exercise enhances a subjects’ ability to execute responses under time pressure (shorter Go reaction time, RT without a change in accuracy) but also enhances a subjects’ ability to withhold ongoing motor responses (shorter stop-signal RT). The present outcomes reveal that the beneficial effect of exercise is neither limited to motor response tasks, nor to cognitive tasks performed during exercise. Beneficial effects of exercise remain present on both response execution and response inhibition performance for up to 52 min after exercise cessation. 相似文献
66.
Performance Indicators in Math: Implications for Brief Experimental Analysis of Academic Performance
Brief experimental analysis (BEA) can be used to specify intervention characteristics that produce positive learning gains
for individual students. A key challenge to the use of BEA for intervention planning is the identification of performance
indicators (including topography of the skill, measurement characteristics, and decision criteria) that meaningfully relate
to longer term success in the learning environment. This study investigates the utility of various curriculum-based assessment
and measurement estimates of mathematics performance for predicting functional outcomes (i.e., retention of learned skills
over time and faster learning of related content in the future). All children in grades 2–5 at the participating school participated
in protocol-based computational fluency-building intervention 4 days per week for an entire school year. Specific criteria
were applied each week to systematically increase intervention difficulty classwide according to a pre-established sequence
of computational skill objectives. Three measurements were routinely obtained. Each week children completed a timed probe
of the skill for which intervention was currently occurring and a timed probe of previously mastered skills from the sequence
of computational skill objectives. Each month, all children completed a timed probe of mathematics skills representing computational
skills that students were expected to master by year’s end at each grade level. At all grade levels, learning a skill that
appeared early in the hierarchy or sequence of skills related positively to learning of future related and more complex computational
skills. Fluency criteria were specified that predicted retention of the skill over several months. 相似文献
67.
Learning about food palatability from watching what conspecifics eat might be one of the advantages of group living. A previous
study investigated whether group members' presence or eating activity account for social facilitation of eating of foods never
previously tasted. Capuchins encountered novel colored foods when (1) alone (Alone condition) or (2) with group members visible
in the nearby cage (Group-present condition) or (3) with group members present and eating a familiar food that had not been
colored (Group+food condition). Social facilitation of eating occurred when group members were eating, despite the difference
in color between the familiar food eaten by them and the novel food presented to the experimental subject. To clarify what
subjects learnt from group members when social facilitation occurred, we further analyze here the data from the previous study.
The number of visual exposures to the colored novel food (as a group member) correlated with increased consumption of that
novel food when encountered later (as experimental subject). In contrast, the number of times that an individual fed on the
familiar food (as a group member) did not decrease its consumption of novel food (as experimental subject). Therefore, capuchins
(1) habituated to the colors of the novel foods, and (2) did not take into account that seeing group members eating a food
does not provide information about the palatability of a differently colored food. Since social facilitation of eating occurs
when foods do not match in color, at least in capuchins, social facilitation of eating should not be considered as a way of
learning about a safe diet, but rather as a way of overcoming neophobia.
Accepted after revision: 18 August 2001
Electronic Publication 相似文献
68.
基于反应风格理论,本研究探索反应风格在青少年孤独感与抑郁症状之间的中介效应。使用孤独感量表、儿童反应风格量表以及儿童抑郁量表对 795 名 青少年进行调查。结果发现:(1)青少年孤独感能显著预测抑郁症状。(2)青少年孤独感能通过反刍、问题解决间接预测抑郁症状。(3)反应风格整体(比率分数)中介青少年孤独感与抑郁症状之间的关系。本研究结果显示,反应风格能够解释青少年孤独感与抑郁症状之间的内在机制。 相似文献
69.
发展性阅读障碍是一种在获得阅读技能方面的特殊困难, 这种障碍会严重影响个体的发展, 如何帮助发展性阅读障碍者改善其阅读技能是近年来研究的焦点。传统的干预方法主要针对发展性阅读障碍者的语音缺陷, 这类方法存在一些问题, 如费时费力、给阅读障碍者带来阅读压力等。近年来, 大部分研究表明通过趣味性的动作视频游戏训练可以显著地提高发展性阅读障碍者的阅读技能, 但是其背后的机制尚不明确。基于大细胞通路缺陷理论框架, 从视觉空间注意、注意跨通道转换、视觉运动加工等方面来梳理动作视频游戏与阅读之间的关系, 揭示了动作视频游戏训练对阅读效率影响的可能内在机制。未来的研究可以在大细胞通路缺陷理论的框架下, 深入分析动作视频游戏改善阅读的神经机制, 并尝试开发更适合发展性阅读障碍者的干预程序。 相似文献
70.
精神分裂症患者的视觉观点采择影响其必要的社交活动和生活质量。本文通过对精神分裂症患者视觉观点采择的研究进行梳理,总结出相关的心理特点:精神分裂症患者的视觉观点采择过程受损,表现出自我中心性和他人中心性。在神经生理上表现出与视觉观点采择相关的脑区激活减弱。可能的原因是患者认知功能中反应抑制能力和心理旋转能力的受损所致,建议采用认知干预疗法可能会改善患者的视觉观点采择能力。目前的研究论证了精神分裂症患者视觉观点采择过程的损伤,对于不同水平的视觉观点采择下精神分裂症患者的认知模式还未有明确的定论,未来的研究可以从该角度入手,更加明确精神分裂症患者不同水平视觉观点采择的特点和神经生理活动。 相似文献