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101.
Identifying biological mechanisms through which genes lead to individual differences in emotional behavior is paramount to our understanding of how such differences confer risk for neuropsychiatric illness. The emergence of techniques such as in vivo imaging of brain function in humans and genetic engineering in rodents has provided important new insights into the impact of serotonin (5-HT), a key modulator of emotional behavior, on neural systems subserving anxiety and depression. A major finding has been the discovery of genetic variation in a crucial regulatory molecule within the 5-HT system, the 5HT transporter (5-HTT), and its influence on emotional traits. The study of the 5-HTT provides a new foundation for understanding the neurobiological and genetic basis of emotional regulation and affective illness. 相似文献
102.
103.
Older adults recalled memories from each decade of life. Memories were classified in terms of the psychosocial stages to which their content corresponded. For the majority of memories it was found that age at encoding corresponded to when specific psychosocial stages would have been most likely to have occurred. In a second experiment older adults recalled memories to cues drawn from psychosocial stages and the same pattern of findings was observed. These findings demonstrate that the goals of the self play a major role in both the encoding and accessibility of autobiographical memories, and they also provide support for Erikson's psychosocial theory of development (1950, 1997). 相似文献
104.
Neill JC Liu Z Mikati M Holmes GL 《Journal of the experimental analysis of behavior》2005,84(3):357-370
Children who have status epilepticus have continuous or rapidly repeating seizures that may be life-threatening and may cause life-long changes in brain and behavior. The extent to which status epilepticus causes deficits in auditory discrimination is unknown. A naturalistic auditory location discrimination method was used to evaluate this question using an animal model of status epilepticus. Male Sprague-Dawley rats were injected with saline on postnatal day (P) 20, or a convulsant dose of pilocarpine on P20 or P45. Pilocarpine on either day induced status epilepticus; status epilepticus at P45 resulted in CA3 cell loss and spontaneous seizures, whereas P20 rats had no cell loss or spontaneous seizures. Mature rats were trained with sound-source location and sound-silence discriminations. Control (saline P20) rats acquired both discriminations immediately. In status epilepticus (P20) rats, acquisition of the sound-source location discrimination was moderately impaired. Status epilepticus (P45) rats failed to acquire either sound-source location or sound-silence discriminations. Status epilepticus in rat causes an age-dependent, long-term impairment in auditory discrimination. This impairment may explain one cause of impaired auditory location discrimination in humans. 相似文献
105.
Luck and Vogel (1997) have reported several striking results in support of the view that visual short-term memory (VSTM) has a fixed capacity of four objects, irrespective of how many relevant features those objects comprise. However, more recent studies have challenged this account, indicating only a weak effect of the number of objects once other factors are more evenly equated across conditions. Here, we employed a symmetry manipulation to verify object segmentation in our displays, to demonstrate that when spatial and masking factors are held constant, the number of objects per se has no effect on VSTM. Instead, VSTM capacity may reflect the number of object "parts" or feature conjunctions in a given display. 相似文献
106.
Holmes CB 《Psychological reports》2003,92(2):692
Given that most doctoral programs in psychology have more applicants than openings, it is understandable that programs would focus on higher GRE scores which predict program completion better than lower scores. 相似文献
107.
To investigate the time course of emotional expression processing, we recorded ERP responses to stimulus arrays containing
neutral versus angry, disgusted, fearful, happy, sad, or surprised faces. In one half of the experiment, the task was to discriminate
emotional and neutral facial expressions. Here, an enhanced early frontocentral positivity was elicited in response to emotional
as opposed to neutral faces, followed by a broadly distributed positivity and an enhanced negativity at lateral posterior
sites. These emotional expression effects were very similar for all six basic emotional expressions. In the other half of
the experiment, attention was directed away from the faces toward a demanding perceptual discrimination task. Under these
conditions, emotional expression effects were completely eliminated, demonstrating that brain processes involved in the detection
and analysis of facial expression require focal attention. The face-specific N170 component was unaffected by any emotional
expression, supporting the hypothesis that structural encoding and expression analysis are independent processes. 相似文献
108.
Howard C. Daudistel Harmon M. Hosch Malcolm D. Holmes Joseph B. Graves 《Journal of applied social psychology》1999,29(2):317-336
This research examined jury decisions in 317 noncapital felony cases in El Paso, Texas, and assessed the impact of juror ethnicity on jury trial outcomes. Results revealed that there was no relation between defendant ethnicity and the probability of conviction. Anglo American defendants, however, received sentences that were approximately twice as severe as Hispanic defendants. Sentences imposed by juries were significantly related to defendant ethnicity and type of crime for which they were tried. Sentences were also influenced by defendant ethnicity in interaction with jury ethnic composition. Important differences appeared when there was a critical mass of 6 or more Hispanics on juries. This study, using criminal court data, provides a unique opportunity to examine the utility of social psychological theories for understanding actual trial outcomes. 相似文献
109.
Dorothy Evans Holmes 《Journal of Applied Psychoanalytic Studies》1999,1(4):319-332
In this paper I propose an approach for the evocative use and resolution of racial and countertransferential manifestations in the treatment situation. When addressed with the interest they warrant, these phenomena can become powerful tools for the advancement of the treatment, rather than blind spots. The therapist's own treatment is offered as the most likely means through which the evocative and pernicious effects of race and countertransference can be mastered. 相似文献
110.
Noncontingent escape (NCE) was used to reduce disruptive behavior in 3 children during regularly scheduled speech therapy sessions. Results showed rapid decreases in disruptive behavior and accompanying increases in compliance across children. Findings suggest that speech therapists with little expertise in behavior analysis can effectively implement NCE. 相似文献