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221.
Pathological stress responses are implicated in numerous disorders. Hypothalamic-pituitary-adrenal axis function is influenced by gene-environment interaction, with early-life environmental adversity having long-lasting effects. We examine the evidence that, in humans, these effects are apparent from infancy. We systematically reviewed published findings on cortisol response to a stressor, in 0-5-year-olds already exposed to adversity. Adversity was defined as a negative environmental influence present post-conception. We searched Ovid MEDLINE (1950-May 2010), EMBASE (1980-May 2010) and PsychINFO (1806-May 2010). We included peer-reviewed, English language studies that analysed salivary cortisol before and after a standardised stressor. We identified 30 studies, of which 27 reported a significant effect of adversity on the cortisol response to stress. Six of these demonstrated an effect of prenatal substance exposure. Thirteen studies found that psychosocial adversity increased cortisol reactivity. Three studies reported that cortisol reactivity could be normalised by intervention programmes. The studies were heterogeneous, both in nature of adversity studied and in stressor used, precluding meta-analysis and assessment of publication bias. Our review presents evidence that adversity disrupts the stress response from an early age. Longitudinal studies are required to determine whether effects persist, alter with time, or are reversible with intervention. 相似文献
222.
A growing number of studies have shown that significant impairments to search and selection can occur if the target item carries
a feature of the irrelevant distractors currently being ignored Braithwaite, Humphreys, and Hodsoll (Journal of Experimental Psychology: Human Perception and Performance, 29, 758–778, 2003). However, these effects have been documented only when search has been extended over time (i.e., in preview search), and
not in standard search displays with simultaneously presented items. Here, we present the first evidence that similar costs
to selection can occur in simultaneous displays under appropriate circumstances. In the present experiment, participants searched
a display for a moving target letter among static and moving distractors. Search efficiency was significantly enhanced for
a moving target when half of the letters moved (and half remained static), allowing the static items to be excluded from search.
However, if the moving target then shared its color with the irrelevant static items, significant costs emerged, relative
to baselines. These results are consistent with the involvement of a general feature-based suppression mechanism in selection,
operating over space as well as time. 相似文献
223.
Colautti LA Fuller-Tyszkiewicz M Skouteris H McCabe M Blackburn S Wyett E 《Body image》2011,8(4):315-321
The present study evaluated whether the strength of relationship between contextual cues (presence of company and mood) and state body dissatisfaction varied as a function of individual differences in key trait measures (body shame, body surveillance tendencies, internalization of appearance standards, and trait affect) which have been linked to trait body dissatisfaction. Fifty-five undergraduate women completed a questionnaire containing the trait-based measures and then carried a Personal Digital Assistant (PDA) for a 7-day period. The PDA prompted participants six times daily to self-report their current mood and state body dissatisfaction. Multi-level modeling revealed that individual differences in body shame predicted inter-individual variability in the strength of the relationships between presence of company and state body dissatisfaction, and positive mood and state body dissatisfaction. Trait positive affect also explained variance in the positive mood state-body dissatisfaction relationship. The implications of the findings for prevention of body image disturbances are discussed. 相似文献
224.
225.
Roch SG Lane JA Samuelson CD Allison ST Dent JL 《Organizational behavior and human decision processes》2000,83(2):724-212
Two studies were conducted to test a two-stage model of the psychological mechanisms underlying the overconsumption of scarce resources in small groups. The model proposes that members of groups sharing resources first anchor their consumption choices on an “equal-division” heuristic and then, given sufficient cognitive capacity, adjust their choices in a self-serving direction. The results from both studies support the model. The first study found that when faced with a common resource pool almost all group members expressed thoughts regarding equality; however, individuals with sufficient cognitive capacity requested more from the pool and expressed more task-relevant thoughts than individuals lacking the necessary cognitive resources. The second study provided additional support for the two-stage model by demonstrating that group members' cognitions occur in the order predicted by the model and by demonstrating that an individual difference, social value orientation, affects thought processes only when individuals are not experiencing high cognitive loads. Implications are discussed. 相似文献
226.
This study was designed to investigate the relationship between sexuality and exercise motivations in 93 British bar staff.
Participants who self-identified as heterosexual, gay, or lesbian completed the revised version of the Exercise Motivations
Inventory and reported exercise frequency. Heterosexual men scored lower on appearance motives than did heterosexual women
and gay men, higher on enjoyment motives than did gay men, and higher on competition motives than did women and gay men. Men
were significantly less likely than women to be motivated by weight management. Heterosexual men also reported exercising
significantly more frequently than the other three groups. Suggestions for targeted exercise promotion initiatives are discussed. 相似文献
227.
Cone excitation ratios correlate with color discrimination performance in the horse (Equus caballus)
Hall CA Cassaday HJ Vincent CJ Derrington AM 《Journal of comparative psychology (Washington, D.C. : 1983)》2006,120(4):438-448
Six horses (Equus caballus) were trained to discriminate color from grays in a counterbalanced sequence in which lightness cues were irrelevant. Subsequently, the pretrained colors were presented in a different sequence. Two sets of novel colors paired with novel grays were also tested. Performance was just as good in these transfer tests. Once the horse had learned to select the chromatic from the achromatic stimulus, regardless of the specific color, they were immediately able to apply this rule to novel stimuli. In terms of the underlying visual mechanisms, the present study showed for the first time that the spectral sensitivity of horse cone photopigments, measured as cone excitation ratios, was correlated with color discrimination performance, measured as accuracy, repeated errors, and latency of approach. 相似文献
228.
Davidson K Tyrer P Gumley A Tata P Norrie J Palmer S Millar H Drummond L Seivewright H Murray H Macaulay F 《Journal of personality disorders》2006,20(5):431-449
This paper describes the rationale for a randomized controlled trial, comparing cognitive behavior therapy in addition to treatment as usual with treatment as usual alone, for borderline personality disorder. Previous pioneering randomized controlled trials of psychotherapies have suffered from methodological weaknesses and have not always been reported clearly to allow adequate evaluation of either the individual study or comparisons across studies to be undertaken. We report on the recruitment and randomization, design, and conduct of an ongoing randomized controlled trial of one hundred and six patients with borderline personality disorder. Primary and secondary hypotheses and their planned analyses are stated. The baseline characteristics of 106 patients meeting diagnostic criteria for borderline personality disorder are described. 相似文献
229.
Early motherhood is identified as a social problem, and having children at an early age is assumed to lead to psychological distress, welfare dependence and socioeconomic disadvantage. Analysis of responses from 9,689 young participants in the Australian Longitudinal Study on Women's Health was used to examine predictors and outcomes of early motherhood in Australia. Survey 1 (1996, aged 18 - 23) and Survey 2 (2000, aged 22 - 27), were used to categorize women as Childless, Existing Mothers (before Survey 1) and New Mothers (became mothers before Survey 2). Multivariate logistic regressions provided comparisons on sociodemographics, gynaecological variables, psychological wellbeing and health behaviours. Survey 1 data show that Existing Mothers experience socioeconomic disadvantages and unhealthy lifestyles. However, those who will go on to become mothers earlier than their peers already experience similar disadvantages. Further, the Survey 2 data show that, when these pre-existing disadvantages are controlled for, the additional deficits experienced by early mothers are relatively minor. Social disadvantage predisposes women to become mothers early, and to adopt unhealthy behaviours. However, young Australian women cope well with the challenges of early motherhood. In the longer term, unhealthy lifestyles and low education may lead to ill health and disadvantage, but early motherhood is not the initiator of this trajectory. 相似文献
230.
The authors examined the association between color-blind racial ideology and self-reported multicultural counseling competencies in 130 applied psychology students and mental health workers. Results from 1 sample (n = 79) indicated that greater levels of color-blind racial ideology as measured by the Color-Blind Racial Attitudes Scale (Neville, Lilly, Duran, Lee, & Browne, 2000) were (1) related to lower self-reported multicultural counseling awareness and knowledge as measured by the Multicultural Counseling Knowledge and Awareness Scale (MCKAS; Ponterotto, Gretchen, Utsey, Rieger, & Austin, 2002) and (2) accounted for a significant amount of variance in MCKAS scores over and above that explained by self-reported multicultural training, social desirability, and participant race. Findings from another sample also provided empirical support for the link between higher color-blind racial ideology and lower multicultural case conceptualization ability (n = 51), after controlling for the influence of the number of multicultural course(s) taken. Implications of the findings and future directions are provided. 相似文献