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81.
Sensory Integration and Response to Balance Perturbation in Overweight Physically Active Individuals
The purpose of this study was to compare sensory integration and response to balance perturbation between physically active normal weight and overweight adults. Physically active young adults were grouped into normal weight (n = 45) or overweight (n = 17) according to the World Health Organization body mass index classification for Asian adults. Participants underwent two balance tests: sensory organization and motor control. Overweight participants presented marginally lower somatosensory score compared to normal weight participants. However, they scored significantly higher in response to balance perturbation. There was no difference in the onset of participants' active response to balance perturbation. Physical activity might have contributed to improved muscle strength and improved the ability of overweight individuals to maintain balance. 相似文献
82.
Janelle H. Cheung Deanna K. Burns Robert R. Sinclair Michael Sliter 《Journal of business and psychology》2017,32(4):347-361
Purpose
Amazon Mechanical Turk is an increasingly popular data source in the organizational psychology research community. This paper presents an evaluation of MTurk and provides a set of practical recommendations for researchers using MTurk.Design/Methodology/Approach
We present an evaluation of methodological concerns related to the use of MTurk and potential threats to validity inferences. Based on our evaluation, we also provide a set of recommendations to strengthen validity inferences using MTurk samples.Findings
Although MTurk samples can overcome some important validity concerns, there are other limitations researchers must consider in light of their research objectives. Researchers should carefully evaluate the appropriateness and quality of MTurk samples based on the different issues we discuss in our evaluation.Implications
There is not a one-size-fits-all answer to whether MTurk is appropriate for a research study. The answer depends on the research questions and the data collection and analytic procedures adopted. The quality of the data is not defined by the data source per se, but rather the decisions researchers make during the stages of study design, data collection, and data analysis.Originality/Value
The current paper extends the literature by evaluating MTurk in a more comprehensive manner than in prior reviews. Past review papers focused primarily on internal and external validity, with less attention paid to statistical conclusion and construct validity—which are equally important in making accurate inferences about research findings. This paper also provides a set of practical recommendations in addressing validity concerns when using MTurk.83.
The concept of holistic processing is a cornerstone of face-recognition research. In the study reported here, we demonstrated that holistic processing predicts face-recognition abilities on the Cambridge Face Memory Test and on a perceptual face-identification task. Our findings validate a large body of work that relies on the assumption that holistic processing is related to face recognition. These findings also reconcile the study of face recognition with the perceptual-expertise work it inspired; such work links holistic processing of objects with people's ability to individuate them. Our results differ from those of a recent study showing no link between holistic processing and face recognition. This discrepancy can be attributed to the use in prior research of a popular but flawed measure of holistic processing. Our findings salvage the central role of holistic processing in face recognition and cast doubt on a subset of the face-perception literature that relies on a problematic measure of holistic processing. 相似文献
84.
Tracking Multiple Statistics: Simultaneous Learning of Object Names and Categories in English and Mandarin Speakers 下载免费PDF全文
Chi‐hsin Chen Lisa Gershkoff‐Stowe Chih‐Yi Wu Hintat Cheung Chen Yu 《Cognitive Science》2017,41(6):1485-1509
Two experiments were conducted to examine adult learners' ability to extract multiple statistics in simultaneously presented visual and auditory input. Experiment 1 used a cross‐situational learning paradigm to test whether English speakers were able to use co‐occurrences to learn word‐to‐object mappings and concurrently form object categories based on the commonalities across training stimuli. Experiment 2 replicated the first experiment and further examined whether speakers of Mandarin, a language in which final syllables of object names are more predictive of category membership than English, were able to learn words and form object categories when trained with the same type of structures. The results indicate that both groups of learners successfully extracted multiple levels of co‐occurrence and used them to learn words and object categories simultaneously. However, marked individual differences in performance were also found, suggesting possible interference and competition in processing the two concurrent streams of regularities. 相似文献
85.
We examined the joint role of parental word reading skills and conventional home literacy environment measures among 320 Filipino low‐ to middle‐income families in Cebu City, Philippines with children aged 5–8 years old. A ranking of parent‐reported ratings of their frequency of engaging in home literacy activities and adult literacy practices revealed that book‐related behaviors were less frequently practiced relative to other behaviors, and mean ratings on the home literacy resources scale suggested a relatively print‐poor environment. Nevertheless, scale items about book reading and direct literacy instruction at home correlated with child's language and literacy skills. Structural equation modeling showed that parent's education and frequency of engaging in home literacy activities uniquely accounted for variance in child's oral language and print knowledge skills. In a second model, parent's word reading skills were significantly related to child's skills, but did not eliminate or attenuate influences from parent's education and home literacy activities. Results are important in relation to theories on the intergenerational transmission of literacy skills and the generalizability of findings from developed countries to developing country contexts. 相似文献
86.
This study examined the clinical utility of the Cross-Cultural (Chinese) Personality Inventory (CPAI-2) in differentiating the personality characteristics of Chinese men with substance use disorders from other psychiatric patients and normal control participants. The CPAI-2 profile of 121 Chinese men with substance use disorders was contrasted with that of a matched psychiatric comparison group (n = 172) and a normal comparison group (n = 187). Multivariate analyses of variance and logistic regression results supported the utility of the CPAI-2 clinical scales, especially Pathological Dependence, Antisocial Behavior, and Depression, for assessing substance use disorders. The Pathological Dependence scale (cutoff T score of 64) achieved good sensitivity and specificity. Apart from the universal personality traits related to neuroticism, conscientiousness, and agreeableness found in Western studies, the indigenously derived CPAI-2 personality scales, including Family Orientation and Harmony, highlighted deficits in social adjustment and interpersonal relationship as important cultural features in the personality characteristics of these participants. The study provided a cross-cultural extension to research on the relationship between personality and substance use disorders and could assist clinicians in considering culturally relevant treatment approaches. 相似文献
87.
Kelly MP Cheung YF Favilla C Siegel SJ Kanes SJ Houslay MD Abel T 《Learning & memory (Cold Spring Harbor, N.Y.)》2008,15(2):75-83
Memory formation requires cAMP signaling; thus, this cascade has been of great interest in the search for cognitive enhancers. Given that medications are administered long-term, we determined the effects of chronically increasing cAMP synthesis in the brain by expressing a constitutively active isoform of the G-protein subunit Galphas (Galphas*) in postnatal forebrain neurons of mice. Previously, we showed that Galphas* mice exhibit increased adenylyl cyclase activity but decreased cAMP levels in cortex and hippocampus due to a PKA-dependent increase in total cAMP phosphodiesterase (PDE) activity. Here, we extend previous findings by determining if Galphas* mice show increased activity of specific PDE families that are regulated by PKA, if Galphas* mice show PKA-dependent deficits in fear memory, and if these memory deficits are associated with PKA-dependent alterations in neuronal activity as mapped by Arc mRNA expression. Consistent with previous findings, we show here that Galphas* mice exhibit a significant compensatory increase in cAMP PDE1 activity and a trend toward increased cAMP PDE4 activity. Further, inhibiting the presumably elevated PKA activity in Galphas* mice fully rescues short- and long-term memory deficits in a fear-conditioning task, while extending the training session from one to four CS-US pairings partially rescues these deficits. Mapping of Arc mRNA levels suggests these PKA-dependent memory deficits may be related to decreased neuronal activity specifically within the cortex. Galphas* mice show decreased Arc mRNA expression in CA1, orbital cortex, and cortical regions surrounding the hippocampus; however, only the deficits in cortical regions surrounding the hippocampus are PKA dependent. Our results imply that chronically stimulating targets upstream of cAMP may detrimentally affect cognition. 相似文献
88.
Fanny M. Cheung 《Asian Journal of Social Psychology》2004,7(1):83-88
The Special Issue highlights the importance of psychology in the research agenda on severe acute respiratory syndrome (SARS). The five articles examined relevant theories on social cognition and coping in the ecological context of the SARS outbreak. They provide preliminary tests to current psychological principles of coping and health psychology in a real crisis. The limitations of the studies are recognized. Other areas of psychological research on SARS are suggested. It is proposed that the biopsychosocial model of behavioral medicine could be expanded as a paradigm in public health to study and prepare for future emerging epidemics. 相似文献
89.
When do women respond against discrimination? Exploring factors of subtlety,form, and focus 下载免费PDF全文
Alex Lindsey Eden King HoKwan Cheung Michelle Hebl Shakeema Lynch Victor Mancini 《Journal of applied social psychology》2015,45(12):649-661
We examined the personal‐group discrimination discrepancy (PGDD), the tendency for women to recognize that others encounter sexism while simultaneously minimizing their own personal experiences with sexism, and the degree to which it (a) applies to all manifestations of discrimination, and (b) extends beyond perceptions of discrimination to taking action against it. Our findings replicated the PGDD when it comes to perceptions of discrimination, but this effect was reversed for behavioral action such that women were more likely to take action against discrimination when it was directed at them personally. We also disentangled the factors of subtlety (subtle vs. overt) and form (formal vs. interpersonal) by showing that women can reliably distinguish between these factors when determining their reactions to discrimination. 相似文献
90.
Anne Lockley MA MEval Yee Tak Derek Cheung PhD Georgina Cox PhD Jo Robinson MSc Michelle Williamson BaHSc Meredith Harris MPH Anna Machlin DPsych Caitlin Moffat BLArch Jane Pirkis PhD 《Suicide & life-threatening behavior》2014,44(4):392-407
The Gap Park Self‐Harm Minimisation Masterplan project is a collaborative attempt to address jumping suicides at Sydney's Gap Park through means restriction, encouraging help‐seeking, and increasing the likelihood of third‐party intervention. We used various data sources to describe the Masterplan project's processes, impacts, and outcomes. There have been reductions in reported jumps and confirmed suicides, although the trends are not statistically significant. There has been a significant increase in police call‐outs to intervene with suicidal people who have not yet reached the cliff's edge. The collaborative nature of the Masterplan project and its multifaceted approach appear to be reaping benefits. 相似文献