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641.
    
There are cells in our motor cortex that fire both when we perform and when we observe similar actions. It has been suggested that these perceptual‐motor couplings in the brain develop through associative learning during correlated sensorimotor experience. Although studies with adult participants have provided support for this hypothesis, there is no direct evidence that associative learning also underlies the initial formation of perceptual–motor couplings in the developing brain. With the present study we addressed this question by manipulating infants’ opportunities to associate the visual and motor representation of a novel action, and by investigating how this influenced their sensorimotor cortex activation when they observed this action performed by others. Pre‐walking 7–9‐month‐old infants performed stepping movements on an infant treadmill while they either observed their own real‐time leg movements (Contingent group) or the previously recorded leg movements of another infant (Non‐contingent control group). Infants in a second control group did not perform any steps and only received visual experience with the stepping actions. Before and after the training period we measured infants’ sensorimotor alpha suppression, as an index of sensorimotor cortex activation, while they watched videos of other infants’ stepping actions. While we did not find greater sensorimotor alpha suppression following training in the Contingent group as a whole, we nevertheless found that the strength of the visuomotor contingency experienced during training predicted the amount of sensorimotor alpha suppression at post‐test in this group. We did not find any effects of motor experience alone. These results suggest that the development of perceptual–motor couplings in the infant brain is likely to be supported by associative learning during correlated visuomotor experience.  相似文献   
642.
    
This study compares the behavioral and attitudinal career commitment of college students, then examines the influences of parental attachment and separation on career commitment. Undergraduates (N = 195) from 3 academic programs were surveyed: a combined degree program that accepts students simultaneously into bachelor's and medical programs, premedical curriculum alone, and general university enrollment. Behavioral career commitment (enrollment in one of the aforementioned programs) correlated with attitudinal commitment for the combined degree and general enrollment groups. Greater attachment to father and less separation from parents were associated with lower career commitment for men. Attachment and separation did not predict career commitment for women.  相似文献   
643.
    
Counselors in all settings work with clients who are survivors of trauma. Vicarious trauma, or counselors developing trauma reactions secondary to exposure to clients' traumatic experiences, is not uncommon. The purpose of this article is to describe vicarious trauma and summarize the recent research literature related to this construct. The Constructivist Self‐Development Theory (CSDT) is applied to vicarious trauma, and the implications CSDT has for counselors in preventing and managing vicarious trauma are explored.  相似文献   
644.
    
Group members typically favour ingroups over outgroups, particularly when distributing positive rather than negative resources. The present investigation examined whether the positive–negative discrimination asymmetry in the minimal group paradigm varies as a function of ingroup identification. After being categorized into arbitrary groups, participants expressing low to high ingroup identification allocated positive, neutral, or negative outcomes on the basis of group membership (i.e. ingroup versus outgroup recipients). The interaction between ingroup identification and outcome valence revealed that identification influenced the magnitude of discrimination asymmetry. Specifically, increases in identification led to discrimination in favour of the ingroup for positive but not negative outcomes. The implications for intergroup behaviour more generally are considered. Copyright © 2002 John Wiley & Sons, Ltd.  相似文献   
645.
    
Abstract

The aims of this systematic literature review are to describe the pattern of attributions made for the causes of heart disease, and to determine how this pattern varies with the method by which attributions are elicited, and the respondent group.

A search yielded 47 papers and reports, containing 54 datasets. Lifestyle factors and chronic stress were the most common causes cited across all datasets. Attributions to stressors and fate or luck were more likely to be reported in studies that used interval rating scales than in studies that used dichotomous ratings. Cardiac patients were more likely to mention stressors and fate or luck as causes of heart disease; non-patients rated being overweight and hypertensive as more important

The differences observed between the responses of patients and non-patients may be due to actor - observer differences, or to a methodological difference: patients are often asked to report their own experiences whereas non-patients are asked about the general case.  相似文献   
646.
    
Objective: Discrimination can have a negative impact on psychological well-being, attitudes and behaviour. This research evaluates the impact of experiences of weight-based discrimination upon emotional eating and body dissatisfaction, and also explores whether people's beliefs about an ingroup's social consensus concerning how favourably overweight people are regarded can moderate the relationship between experiences of discrimination and negative eating and weight-related cognitions and behaviours.

Research methods and procedures: 197 undergraduate students completed measures about their experiences of weight-based discrimination, emotional eating and body dissatisfaction. Participants also reported their beliefs concerning an ingroup's attitude towards overweight people.

Results: Recollections of weight-based discrimination significantly contributed to emotional eating and body dissatisfaction. However, the relationships between experiencing discrimination and body dissatisfaction and emotional eating were weakest amongst participants who believed that the ingroup held a positive attitude towards overweight people.

Discussion: Beliefs about ingroup social consensus concerning overweight people can influence the relationships between weight-based discrimination and emotional eating and body dissatisfaction. Changing group perceptions to perceive it to be unacceptable to discriminate against overweight people may help to protect victims of discrimination against the negative consequences of weight-based stigma.  相似文献   
647.
    
The hypotheses of Sulloway (1996) regarding birth order differences in five-factor model personality traits were tested in a sample of 231 college students with the NEO Five-Factor Inventory (NEO-FFI; Costa & McCrae, 1992). Data were collected from three sources (self, peer, and parent) to systematically evaluate previous observations that birth order differences are more commonly found when ratings are obtained from family members than from observers outside the family (Ernst & Angst, 1983). Using a between-family design, students were selected only from families with two or three full biological siblings and no half-siblings, step-siblings, or adopted siblings. Firstborn (n = 103) and laterborn (n = 128) students were compared using NEO-FFI ratings by the self, by a same-sex college peer, and by a biological parent. No birth order differences were found for any of the five NEO-FFI scores using any of the three rating sources. Effect sizes (Cohen’s d) were less than .20 for all comparisons. Suggestions for new approaches to the study of birth order differences are considered, including the use of within-family designs and more contextualized personality variables.  相似文献   
648.
    
Given the effectiveness of putative escape extinction as treatment for feeding problems, it is surprising that little is known about the effects of escape as reinforcement for appropriate eating during treatment. In the current investigation, we examined the effectiveness of escape as reinforcement for mouth clean (a product measure of swallowing), escape as reinforcement for mouth clean plus escape extinction (EE), and EE alone as treatment for the food refusal of 5 children. Results were similar to those of previous studies, in that reinforcement alone did not result in increases in mouth clean or decreases in inappropriate behavior (e.g., Piazza, Patel, Gulotta, Sevin, & Layer, 2003). Increases in mouth clean and decreases in inappropriate behavior occurred when the therapist implemented EE independent of the presence or absence of reinforcement. Results are discussed in terms of the role of negative reinforcement in the etiology and treatment of feeding problems.  相似文献   
649.
    
We evaluated the effects of parent training for four children whose aberrant behaviors were maintained by social positive or negative reinforcement. Interventions were based on the behavioral function of the problem behavior. Child participants were four children (ages 3 to 5 years) who had developmental delays and exhibited significant aberrant behaviors (tantrums and aggression). The children's mothers were the parent participants. The children's behavior improved as a function of the parents' performance. Copyright © 2001 John Wiley & Sons, Ltd.  相似文献   
650.
    
Staff develofiment is different in the private and public/nonprofit organizational worlds, although both sectors can and do draw from each other. These differences are observable in contextual influences, training for change, learning, and reflective practice.  相似文献   
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