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131.
Although, in everyday life, patients with attention deficit hyperactivity disorder (ADHD) are frequently distracted by goal-irrelevant affective stimuli, little is known about the neural and behavioral substrates underlying this emotional distractibility. Because some of the most important brain responses associated with the sudden onset of an emotional distracter are characterized by their early latency onset and short duration, we addressed this issue by using a temporally agile neural signal capable of detecting and distinguishing them. Specifically, scalp event-related potentials (ERPs) were recorded while 20 boys with ADHD combined type and 20 healthy comparison subjects performed a digit categorization task during the presentation of three types of irrelevant, distracting stimuli: arousing negative (A−), neutral (N) and arousing positive (A+). Behavioral data showed that emotional distracters (both A− and A+) were associated with longer reaction times than neutral ones in the ADHD group, whereas no differences were found in the control group. ERP data revealed that, compared with control subjects, boys with ADHD showed larger anterior N2 amplitudes for emotional than for neutral distracters. Furthermore, regression analyses between ERP data and subjects’ emotional ratings of distracting stimuli showed that only in the ADHD group, emotional arousal (ranging from calming to arousing) was associated with anterior N2: its amplitude increased as the arousal content of the visual distracter increased. These results suggest that boys with ADHD are more vulnerable to the distracting effects of irrelevant emotional stimuli than control subjects. The present study provides first data on the neural substrates underlying emotional distractibility in ADHD. 相似文献
132.
Jiménez L Vaquero JM Lupiáñez J 《Journal of experimental psychology. Learning, memory, and cognition》2006,32(3):475-490
Four experiments investigate the differences between implicit and explicit sequence learning concerning their resilience to structural and superficial task changes. A superficial change that embedded the SRT task in the context of a selection task, while maintaining the sequence, did selectively hinder the expression of implicit learning. In contrast, a manipulation that maintained the task surface, but decreased the sequence validity, affected the expression of learning specifically when it was explicit. These results are discussed in the context of a dynamic framework (Cleeremans & Jiménez, 2002), which assumes that implicit knowledge is specially affected by contextual factors and that, as knowledge becomes explicit, it allows for the development of relevant metaknowledge that modulates the expression of explicit knowledge. 相似文献
133.
Bryant's Empathy Index for children and adolescents: psychometric properties in the Spanish language
The present study investigated the following issues: (1) the structure of Bryant's Empathy Index for children and adolescents in a Spanish sample of 408 boys and 424 girls (M age=14.4 yr.), and (2) sex differences, including effect sizes and internal consistency of the scale. A principal components factor analysis with oblimin rotation showed that 20 of the index's 22 items load on three robust factors, related to Feelings of Sadness, Understanding Feelings, and Tearful Reaction with regard to the emotions of others. The 3-factor structure obtained an adequate fit to the data in the confirmatory factor analysis. Coefficients alpha ranged between .72 and .78. The 3 factors accounted for 42% of variance. As expected, girls scored higher than boys. It was concluded that the Spanish version of Bryant's Empathy Index has an acceptable reliability and construct validity, making it useful for research. 相似文献
134.
Interactive effects of two environmental stressors when simultaneous ly present, i.e., noise and crowding, were analyzed. Four experimental conditions with two intensities of stress for each stressor (high versus low) were created. The stressors were concurrently introduced in laboratory conditions and their effects analyzed using several methodological approaches. More intense and negative effects were expected when the two highest intensities of noise and crowding concurred. 40 people (20 men and 20 women) participated in a study with a 2 x 2 factorial design. Analysis showed an increase in the measures of hemodynamic, endocrine, and neuroendocrine values of participants after being exposed simultaneously to noise and crowding. Similarly, their performance on complex tasks decreased, and they reported a subjective increase in stress. Capacity to cope was indicated by a statistically significant lower mean on the Dimension of Stress scale, tolerance of frustration during the multiple stress condition. 相似文献
135.
Luis?H.?ZayasEmail author Kathy?R.?B.?Jankowski M.?Diane?McKee 《Journal of Adult Development》2005,12(1):53-62
Taking a life-course perspective, we explored the sense of parenting efficacy during the pregnancy-postpartum transition among
a group under-represented in much of adult developmental research, minority women. Our intent was to describe the women's
report of parenting competency in a major life transition occurring within the context of an impoverished urban environment.
We also explored associations with depression, social support, and life events. One hundred and eighty-two African-American
and Hispanic mothers at community health centers in low-income urban areas completed measures early in the third trimester
and again at 3 months postpartum. Across time, the levels of reported parental efficacy and satisfaction increased while depressive
symptoms decreased. Negative life events and levels of depressive symptomatology differentially influenced women's experience
of parenting satisfaction and efficacy feelings before and after their babies were born. 相似文献
136.
The present study explores accuracy in estimating blood glucose levels (BGL) in children with type 1 diabetes and analyzes the kinds of symptoms and cues which they use to estimate their BGL. Forty two children with type 1 diabetes completed a SI/IC-3 scale consisting of 28 items (22 symptoms and 6 feelings), indicating those which they perceived at the time and their intensity. They estimated their BGL and gave reasons for their estimation, before having a blood glucose level analysis performed. The results indicated great variability in the accuracy of estimating BGL. They showed failures in the correct discrimination of symptoms of hypoglycemia as well as the presence of false beliefs regarding indicative symptoms of hyperglycemia, and the absence of symptoms as an indicator for euglycemia, beliefs which provoke different and frequent errors in the estimation of BGL. Correct use of external signs is shown to be related to correct estimations of normal BGL, as well as hypoglycemia and hyperglycemia. We discuss the implications these results could have on designing psychological intervention procedures for diabetics in the form of training programs to discriminate BGL accurately, taking into account these findings and previous studies completed in the same field. 相似文献
137.
The study examined the development of cognitive styles among 182 Chicano children growing up in two communities, one traditional and one dualistic. The Children's Embedded Figures Test was employed as the measure of field independence. In the first and fifth grades, Chicano children in the traditional community were found to have a relatively field-dependent cognitive style, whereas those in the dualistic community had a relatively field-independent cognitive style. No such difference was present in the third grade. In both communities there was a progressive increase in field independence with increasing age. There were no significant sex differences in cognitive style. 相似文献
138.
An analysis of previously reported authoritarianism-situation interactions in the determination of punitiveness suggested that the extent to which target person characteristics or behaviors engage the important ideological content dimensions of the authoritarianism syndrome is a potent mediator of authoritariansim-punitiveness relationships. Support for this analysis was obtained in a jury decisions task in which high authoritarians recommended more severe punishments than did low authoritarians for a defendant accused of incest (p < .01) but not for a defendant accused of child abuse in the course of disciplining a disobedient son or daughter. It was argued that a thorough understanding of authoritarianism-situation interactions as well as other disposition-situation interactions will be achieved only if dispositional variables receive a degree of scrutiny at least equal to that which has recently been recognized as crucial for situational variables. 相似文献
139.
Luis T. Garcia Nancy Erskine Kathy Hawn Susanne R. Casmay 《Journal of personality》1981,49(4):427-437
In the first study subjects were given information about an applicant to graduate school and asked to rate his qualifications. The information experimentally varied (a) whether the school had an affirmative action policy, (b) the ethnicity of the applicant, and (c) whether the applicant was accepted or rejected. Based on Kelley's discussion of the discounting and augmentation principles, it was predicted that the minority applicant would be rated as less qualified when the university was committed to an affirmative action program. The reverse pattern was predicted for the non-minority applicant. The results supported the first prediction but not the second. Experiment 2 was designed to eliminate alternative interpretations of the data and the same results were found. Possible interpretations for the failure of affirmative action in affecting the ratings of nonminority applicants are discussed. 相似文献