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121.
Odor naming and recognition memory are poorer in children than in adults. This study explored whether such differences might result from poorer discriminative ability. Experiment 1 used an oddity test of discrimination with familiar odors on 6-year-olds, 11-year-olds, and adults. Six-year-olds were significantly poorer at discrimination relative to 11-year-olds and adults, who did not differ. Experiment 2 used the same procedure but with hard-to-name visual stimuli and compared only 6-year-olds with adults (as with the remaining experiments in this study). There was no difference in performance between these groups. Experiment 3 used the same procedure as Experiment 1 but with less familiar odors. Six-year-olds were significantly poorer at discrimination than adults. In Experiment 4 the researchers controlled for verbal labeling by using an articulatory suppression task, with the same basic procedure as in Experiment 1. Six-year-old performance was the same as for Experiment 1 and significantly poorer than that of adults. Impoverished olfactory discrimination may underpin performance deficits previously observed in children. These all may result from their lesser experience with odors, relative to adults. 相似文献
122.
Previous studies have shown that two-frame motion detection thresholds are elevated if one frame's contrast is raised, despite the increase in average contrast--the "contrast paradox". In this study, we investigated if such contrast interactions occurred at a monocular or binocular site of visual processing. Two-frame motion direction discrimination thresholds were measured for motion frames that were presented binocularly, dichoptically or interocularly. Thresholds for each presentation condition were measured for motion frames that comprised either matched or unmatched contrasts. The results showed that contrast mechanisms producing the contrast paradox combine contrast signals from both eyes prior to motion computation. Furthermore, the results are consistent with the existence of monocular and binocular contrast gain control mechanisms that coexist either as combined or independent systems. 相似文献
123.
If odor perception involves mnemonic processes, differences in olfactory experience should affect discriminative ability. This was examined here by comparing discriminative performance in children and adults. Using an oddity test of discrimination, in Experiment 1 we tested 6-year-olds (G1), 11-year-olds (G6), and adults (A) on their ability to discriminate unfamiliar odors that varied either in quality (Q) or in quality and intensity (QI). G1 participants were poorer at discriminating the QI set, relative to G6 and A. In Experiment 2, we used an analogous visual procedure and confirmed that this age-related difference was olfactory specific. In Experiment 3, we repeated Experiment 1 but used an articulatory suppression task. G1 participants were poorer than G6 and A participants for both the Q and the QI sets. The implications of these findings for experiential accounts of odor perception and olfactory working memory are discussed. 相似文献
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Kevin R. Brooks Edwina Keen Daniel Sturman Jonathan Mond Richard J. Stevenson Ian D. Stephen 《British journal of psychology (London, England : 1953)》2020,111(4):742-761
Body image disturbance – a cause of distress amongst the general population and those diagnosed with various disorders – is often attributed to the media’s unrealistic depiction of ideal bodies. These ideals are strongly gendered, leading to pronounced fat concern amongst females, and a male preoccupation with muscularity. Recent research suggests that visual aftereffects may be fundamental to the misperception of body fat and muscle mass – the perceptual component of body image disturbance. This study sought to establish the influence of gender on these body aftereffects. Male and female observers were randomly assigned to one of four adaptation conditions (low-fat, high-fat, low-muscle, and high-muscle bodies) and were asked to adjust the apparent fat and muscle levels of male and female bodies to make them appear as ‘normal’ as possible both before adaptation and after adaptation. While neither the gender of observers nor of body stimuli had a direct effect, aftereffect magnitude was significantly larger when observers viewed own-gender (compared with other-gender) stimuli. This effect, which may be due to attentional factors, could have implications for the development of body image disturbance, given the preponderance of idealized own-gender bodies in media marketed to male and female consumers. 相似文献
126.
Mhairi Bowe Debra Gray Clifford Stevenson Niamh McNamara Juliet R. H. Wakefield Blerina Kellezi Iain Wilson Michelle Cleveland Elizabeth Mair Moon Halder Sebastiano Costa 《European journal of social psychology》2020,50(7):1523-1539
Cohesive, resilient communities are vital to the well-being of residents. Uncovering the determinants of successful community identities is therefore essential to progressing the community health agenda. Engaging in community participation through volunteering may be one pathway to building local community identity and enhancing residents’ health and well-being, but the group processes connecting them remain unexplored. We conducted two studies investigating these dynamics using the “Social Cure” perspective. First, we analysed 53 in-depth interviews with volunteers, finding that community relationships shaped their experiences and that volunteering influenced their sense of community belonging, support, and well-being. Second, a community survey (N = 619) revealed that volunteering predicts well-being through the serial mediators of community identification and social support. Our article demonstrates the Social Cure processes involved in community-based volunteering, their impact on community identity, support and well-being, and their implications for community health, and the provision and sustainability of community voluntary action and interventions. 相似文献
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As criminal justice actors increasingly seek to rely on more evidence-informed practices, including risk assessment instruments, they often lack adequate information about the evidence that informed the development of the practice or the tool. Open science practices, including making scientific research and data accessible and public, have not typically been followed in the development of tools designed for law enforcement, judges, probation, and others. This is in contrast to other government agencies, which often open their processes to public notice and comment. Lack of transparency has become pressing in the area of risk assessment, as entire judicial systems have adopted some type of risk assessment scheme. While the types of information used in a risk tool may be made public, often the underlying methods, validation data, and studies are not – nor are the assumptions behind how a level of risk gets categorized as “high” or “low.” We discuss why those concerns are relevant and important to the new risk assessment tool now being used in federal prisons, as part of the First Step Act. We conclude that a number of key assumptions and policy choices made in the design of that tool are not verifiable or are inadequately supported, including the choice of risk thresholds and the validation data itself. Unfortunately, as a result, the federal risk assessment effort has not been the hoped-for model for open risk assessment. 相似文献
129.
Perceived discrimination amongst young people in socio‐economically disadvantaged communities: Parental support and community identity buffer (some) negative impacts of stigma
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Daragh Bradshaw Sarah Jay Namh McNamara Clifford Stevenson Orla T. Muldoon 《The British journal of developmental psychology》2016,34(2):153-168
There is increasing acceptance that children are not unaware of when they are targets of discrimination. However, discrimination as a consequence of socio‐economic disadvantage remains understudied. The aim of this study was to examine the impact of perceived discrimination on well‐being, perceptions of safety and school integration amongst children growing up within socio‐economically disadvantaged communities in Limerick, Ireland. Mediation analysis was used to explore these relationships and to examine the potential role of parental support and community identity in boys and girls in the 6th to 9th year of compulsory education (N = 199). Results indicate perceived discrimination contributed to negative outcomes in terms of school integration, perceptions of safety and levels of well‐being. Age and gender differences were observed which disadvantaged boys and younger children. All negative outcomes were buffered by parental support. Community identity also protected young people in terms of feelings of school integration and risk but not in terms of psychological well‐being. Findings are discussed in terms of the different role of family and community supports for children negotiating negative social representations of their community. 相似文献
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