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951.
Age-related impairment in the 250-millisecond delay eyeblink classical conditioning procedure in C57BL/6 mice
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Vogel RW Ewers M Ross C Gould TJ Woodruff-Pak DS 《Learning & memory (Cold Spring Harbor, N.Y.)》2002,9(5):321-336
In this study we tested 4-, 9-, 12-, and 18-month-old C57BL/6 mice in the 250-msec delay eyeblink classical conditioning procedure to study age-related changes in a form of associative learning. The short life expectancy of mice, complete knowledge about the mouse genome, and the availability of transgenic and knock-out mouse models of age-related impairments make the mouse an excellent species for expanding knowledge on the neurobiologically and behaviorally well-characterized eyeblink classical conditioning paradigm. Based on previous research with delay eyeblink conditioning in rabbits and humans, we predicted that mice would be impaired on this cerebellar-dependent associative learning task in middle-age, at ~9 months. To fully examine age differences in behavior in mice, we used a battery of additional behavioral measures with which to compare young and older mice. These behaviors included the acoustic startle response, prepulse inhibition, rotorod, and the Morris water maze. Mice began to show impairment in cerebellar-dependent tasks such as rotorod and eyeblink conditioning at 9 to 12 months of age. Performance in hippocampally dependent tasks was not impaired in any group, including 18-month-old mice. These results in mice support results in other species, indicating that cerebellar-dependent tasks show age-related deficits earlier in adulthood than do hippocampally dependent tasks. 相似文献
952.
Pronin E Kruger J Savitsky K Ross L 《Journal of personality and social psychology》2001,81(4):639-656
People, it is hypothesized, show an asymmetry in assessing their own interpersonal and intrapersonal knowledge relative to that of their peers. Six studies suggested that people perceive their knowledge of their peers to surpass their peers' knowledge of them. Several of the studies explored sources of this perceived asymmetry, especially the conviction that while observable behaviors (e.g., interpersonal revelations or idiosyncratic word completions) are more revealing of others than self, private thoughts and feelings are more revealing of self than others. Study 2 also found that college roommates believe they know themselves better than their peers know themselves. Study 6 showed that group members display a similar bias-they believe their groups know and understand relevant out-groups better than vice versa. The relevance of such illusions of asymmetric insight for interpersonal interaction and our understanding of "naive realism" is discussed. 相似文献
953.
The Cognitive Differentiation–Integration Effort (CD–IE) hypothesis predicts that the dimension of life history speed (K) regulates the strength of the correlation among cognitive abilities, such that individuals with higher K exhibit more weakly integrated abilities than those with lower K. It is predicted that this effect takes place independently of the level of g owing to the absence of an individual differences level correlation between K and g. CD–IE was examined using two student samples: (1) an all female sample (N = 121), using the ALHB as a measure of K and the two SILS subtests of g; and (2) a combined male and female sample (N = 346), using a shorter three-indicator (“Trifecta”) measure of K, a general creativity measure comprised of two subscales (writing and drawing “creative performance”), and the APM-18 measure of fluid cognition. A third, population-representative sample was obtained from the NLSY (N = 11,907). A K-Factor was constructed from convergent measures of subjective well-being, sociability, interpersonal trust, internal locus of control, and delay of gratification, and a g-factor was constructed from the 10 subscales of the ASVAB. A fourth sample, addressing the question of ethnic differences was collected encompassing eight different ethnic groups with a combined 107 specific ability correlations with g. An aggregate K-Factor was constructed for this sample based on convergent population-level indicators of longevity, total fertility rates and infant mortality. Utilizing the Continuous Parameter Estimation Model, in student sample 1 a significant CD–IE effect was found on the SILS Abstract subtest (β = − .215), but not on the SILS Verbal subtest (β = .069). In student sample 2, CD–IE was observed on the general creativity measure (β = − .127), but not on the fluid cognitive ability measure (β = − .057). Significant effects were also observed on both the written and drawing creative output subscales (β = − .189 and − .183 respectively). In sample 3 (the NLSY), generally statistically significant but small-magnitude CD–IE effects were observed among all 10 ASVAB subtests (mean effect size β = − .032). In sample four, a near-significant CD–IE effect was detected (β = − .167). Controlling for subtest skew reduces the mean effect sizes across individual differences samples (β = − .071 in the student samples, − .027 in the NLSY), but boosted it to significance in the ethnic differences sample (β = − .179). Controlling for the skew of residuals reversed the signs of the CD–IE effects on the ASVAB Words and Comprehension subscales, and also on the SILS Verbal subscale, but amplified the magnitudes of the mean effects in the student and NLSY samples (β = − .036 and − .131), while reducing the effect size slightly in the ethnic-differences sample (β = − .172). In the individual differences samples, these effects were demonstrated to be unconfounded with sex of respondent and also unrelated to the Jensen effect. The apparent independence of the effect from both level of g and subtest g-loading suggests intriguing commonalities with the Lynn–Flynn effect. 相似文献
954.
Rebecca A. Bernert Kiara R. Timpano Carol B. Peterson Scott J. Crow Anna M. Bardone-Cone Daniel le Grange Marjorie Klein Ross D. Crosby James E. Mitchell Stephen A. Wonderlich Thomas E. Joiner 《Personality and individual differences》2013
The present study aimed to investigate whether perfectionism mediates the association between obsessive–compulsive (OC) and eating disorder (ED) symptoms. Analyses were conducted using data collected among a national sample of eating disordered women diagnosed with BN or a subclinical variant of BN (N = 204). Each participant completed a series of self-report inventories on perfectionism, as well as OC, ED, and depressive symptoms. Higher ED symptoms were significantly associated with greater levels of perfectionism (p < .01) and OC symptoms (p < .05). As hypothesized, perfectionism significantly mediated the relationship between ED and OC symptoms, controlling for depression. Findings indicate that perfectionism may be considered a shared etiological or phenomenological factor in ED and OC symptoms. 相似文献
955.
Scott R. Ross Heidi N. Keiser Jessica V. Strong Corinne M. Webb 《Personality and individual differences》2013
Gray’s reinforcement sensitivity theory, consisting of the behavioral inhibition (BIS) and behavioral activation (BAS), is frequently used to represent basic dimensions of psychopathology. However, notably few investigations have examined the link between the BIS/BAS and symptoms of personality disorder (PD). Although the Fight-Flight-Freeze System has emerged in the revised model as an important aspect of motivation, the BIS (linked to anxiety) and BAS (linked to impulsivity) have been the primary foci. The current investigation uses a dimensional measure of PD, the schedule for nonadaptive and adaptive personality (SNAP; Clark, 1993) applied to two independent samples of English-speaking participants: undergraduates (n = 276) and clinical patients (n = 47). Results were consistent across both samples, demonstrating that symptoms of Cluster B PDs are indicative of high BAS levels whereas symptoms of Cluster C PDs are characterized by high BIS levels. 相似文献
956.
Glenn Ross Caddy 《The American journal of family therapy》2013,41(4):297-319
This article describes the evolution of madness in a vulnerable young woman through the progressive manipulation of her religiosity and other beliefs. Evidence acquired during the forensic psychological investigation of a murder led to an ultimately finding of Not Guilty by Reason of Insanity. This case offers insight into the impact of two seriously impaired families systems as well as the profound pathology in a young man who unwittingly induced profound mental illness in his very vulnerable step-sister and the mother of his baby. Therapeutic Intervention over several years and then follow up over eight years showed no evidence of any ongoing or concurrent mental illness after her discharge from detention. 相似文献
957.
RESUMENEl presente artículo reexamina la situación de los experimentos sobre conformidad de Asch. La situación experimental propuesta procura ser más representativa del modo en el que las presiones a la conformidad actúan fuera del laboratorio, definiendo tres condiciones que permiten distintas atribuciones. Los resultados apoyan las hipótesis de partida, destacando que la condición experimental que reproduce la situación de Asch permite menos inconformismo y menos confianza entre los disconformes que las otras dos, y entre éstas, la situación en la que debían postularse diferencias de prioridades en los evaluadores para explicar la propia disidencia era menos propicia para el inconformismo y la confianza en el criterio propio. Finalmente se discuten las implicaciones del experimento sobre las presiones a la conformidad y los procesos de atribución. 相似文献
958.
Conflicting findings concerning the nature and presence of attentional bias in social anxiety and social phobia have been reported in the literature. This paper reports the findings of two studies comparing people with high and low social anxiety on dot probe tasks using words, faces photographed in front view, and faces photographed in profile as stimuli. In Study 1 those with high social anxiety displayed an attentional bias towards negative faces. The low social anxiety group showed an attentional bias towards positive faces. No significant effects were observed on the dot probe using words as stimuli. Study 2 used pairs of faces presented in profile as though looking at each other. One of the faces displayed either a positive, negative or neutral expression. The second face always had a neutral expression, and in half of the trials it was the subject's own face. The findings of this more ecologically valid procedure replicated those of Study 1. Facilitated attention to dots following emotional faces was specific to threatening facial stimuli. From these studies it appears that the facial dot probe task is a more sensitive index of attentional bias than the word task in a non-clinical sample with social anxiety. 相似文献
959.
Ross Wadey Sarah Clark Leslie Podlog Dearbhla McCullough 《Psychology of sport and exercise》2013,14(2):125-135
ObjectiveThe objective of this study was to examine coaches' perceptions of athletes' stress-related growth following sport injury.DesignQualitative inquiry, grounded in a post-positivism paradigm was used to gain an in-depth understanding of the study's objective.MethodA purposeful sample of eight coaches (M age = 45.7; SD = 11.2) were interviewed across different sports and competitive standards. The semi-structured life world interviews were analysed using content analysis, and two trustworthiness procedures were employed to bolster the rigour of the findings (i.e., peer-debriefing and member checking).ResultsFindings revealed four general dimensions of stress-related growth: personal growth (e.g., beliefs), psychological growth (e.g., sporting qualities), social growth (e.g., social support), and physical growth (e.g., strength). The coaches also reported a number of behavioural indicators that reflected the four general dimensions (e.g., health and performance).ConclusionsFindings ‘validate’ or provide coherence with athletes' self-reports of stress-related growth in previous research and also extend the literature by identifying a number of novel types of growth and perceived behavioural correlates. Future avenues of research include the need to conduct prospective studies and explore related concepts (e.g., vicarious stress-related growth). 相似文献
960.