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551.
Hourihan KL Taylor TL 《Journal of experimental psychology. Human perception and performance》2006,32(6):1354-1365
On the premise that committing a word to memory is a type of covert action capable of being stopped, this study merged an item-method directed forgetting paradigm with a stop signal paradigm. The primary dependent measure was immediate recall. Indicating that participants were able to countermand the default instruction to remember, there was an overall directed forgetting effect, the magnitude of which varied as a function of forget signal delay. The results suggest that the covert act of intentionally forgetting may engage cognitive control processes at encoding that are analogous to those required to prevent the execution of prepotent overt responses. 相似文献
552.
Mandrusiak M Rudd MD Joiner TE Berman AL Van Orden KA Witte T 《Suicide & life-threatening behavior》2006,36(3):263-271
The issue of suicide warning signs on the Internet is considered. In addition to reviewing some of the relevant conceptual issues about warning signs, a random sample of Internet sites was selected and reviewed. Warning signs were grouped and agreement across sites was examined, with results confirming broad disparity in what is presented to the public. The implications of a lack of consensus on warning signs for suicide are discussed. 相似文献
553.
Recent research has shown that pride, like the "basic" emotions of anger, disgust, fear, happiness, sadness, and surprise, has a distinct, nonverbal expression that can be recognized by adults (J. L. Tracy & R. W. Robins, 2004b). In 2 experiments, the authors examined whether young children can identify the pride expression and distinguish it from expressions of happiness and surprise. Results suggest that (a) children can recognize pride at above-chance levels by age 4 years; (b) children recognize pride as well as they recognize happiness; (c) pride recognition, like happiness and surprise recognition, improves from age 3 to 7 years; and (d) children's ability to recognize pride cannot be accounted for by the use of a process of elimination (i.e., an exclusion rule) to identify an unknown entity. These findings have implications for the development of emotion recognition and children's ability to perceive and communicate pride. 相似文献
554.
Using a change detection paradigm (Barenholtz, E., Cohen, E. H., Feldman, J., & Singh, M. (2003). Detection of change in shape: An advantage for concavities. Cognition, 89(1) 1-9), we measured sensitivity to the changes of shapes and in particular the difference between detecting a new convex or concave vertex. We conclude that concave vertices per se are not more salient, but changes in the sequence of convexities and concavities along a contour are salient. We argue that these changes are likely to signal a change in perceived part structure. 相似文献
555.
This article introduces tourism as a neglected topic of study for psychologists and discusses how ventures into this area provide opportunities for pioneering research and innovative applications. A coherent body of theory, drawn from experimental, social, and health psychology and synthesized by cross-cultural psychologists for the study of acculturation, is presented as one foundation for this area of inquiry. This includes stress and coping, culture learning, and social identification theories. The conceptual frameworks are applied to the interpretation of selected studies of tourism and are recommended for designing prospective investigations and guiding future research. 相似文献
556.
Inhibition of return (IOR) refers to slower reaction times when a target appears unpredictably in the same location as a preceding cue, rather than in a different location. In the present study, frontal images of human faces were presented intact as face configurations, were rearranged to produce scrambled-face configurations, or were pixilated and randomized to produce nonface configurations. In an orienting paradigm designed to elicit IOR, face and scrambled-face stimuli were used as cues (Experiment 1), as targets (Experiment 2), or along with pixilated nonface stimuli as both cues and targets (Experiment 3). The magnitude of IOR for subsequent localization targets was unaffected by cue configuration. Likewise, the magnitude of IOR was unaffected by target configuration. These results suggest that IOR is a "blind" mechanism that is unaffected by the mere occurrence of biologically relevant cue and target stimuli. 相似文献
557.
We examined the effects of safety-seeking behavior and guided threat focus and reappraisal on fear reduction during exposure. Participants (N=46) displaying marked claustrophobic fear were randomized to one of three 30-min exposure conditions: (a) guided threat focus and reappraisal; (b) safety-behavior utilization; or (c) exposure only control. Tripartite outcome assessments during a behavioral approach test, along with measures of suffocation and restriction fears were obtained at pre- and post-treatment, and at a 2-week follow-up. Treatment process measures were collected throughout treatment and consisted of indices of fear activation; within and between-trial fear habituation; and suffocation and entrapment expectancies. Measures of safety behavior utilization and attentional focus were also collected to assess the integrity of the experimental manipulations. Consistent with prediction, those encouraged to utilize safety-behaviors during exposure showed significantly more fear at post-treatment and follow-up relative to those encouraged to focus and reevaluate their core threat(s) during exposure. Moreover, growth curve analyses of treatment process data analyses revealed that safety-behavior utilization exerted a detrimental effect on between-trial habituation; whereas guided threat reappraisal enhanced between-trial habituation. 相似文献
558.
Gleason TR 《Developmental psychology》2002,38(6):979-992
Preschool-aged children's perceptions of their social relationships were examined, including those with parents, best friends, siblings, and imaginary companions. Sixty 4-year-old children participated in an interview designed to measure perceptions of the degree of conflict, nurturance, instrumental help, and power available in their relationships. Three groups were compared: children with (a) invisible friends, (b) companions who were personified objects (e.g., dolls), and (c) no imaginary companion. Results indicated that children differentiated the relationships in their social networks according to provisions. Parent-child relationships afforded instrumental help and siblings were associated with conflict. Provisions of real and imaginary friendships were similar, although imaginary friends were preferred as objects of nurturance. Results imply that 4-year-old children have developed differentiated relationship schemas and that those of children with invisible friends may be particularly distinct. 相似文献
559.
Cole DA Tram JM Martin JM Hoffman KB Ruiz MD Jacquez FM Maschman TL 《Journal of abnormal psychology》2002,111(1):156-165
The authors address questions about the rate that depressive symptoms emerge, developmental and gender differences in this rate, and differences between parent and child estimates of this rate. In a 12-wave, cohort-sequential, longitudinal design, 1,570 children (Grades 4-11) and parents completed reports about children's depression. Cross-domain latent growth curve analysis revealed that (a) the rate of symptom growth varied with developmental level. (b) gender differences symptom growth preceded emergence of mean level gender differences, (c) the rate of symptom development varied with age, and (d) parent-child agreement about rate of symptom change was stronger than agreement about time-specific symptoms. The authors suggest that predictability of depressive symptoms varies with age and the dimension under investigation. 相似文献
560.
Neural control of behavior: countermanding eye movements 总被引:4,自引:0,他引:4
Understanding the self-control of action entails knowledge about how actions are initiated, how planned actions are canceled
and how the consequences of actions are registered. We have investigated neural correlates of these processes using the countermanding
paradigm – a task that required subjects to occasionally cancel a planned speeded response, and an analysis that provides
an estimate of the time needed to cancel a planned movement. By monitoring the activity of single neurons in the frontal cortex
of macaque monkeys performing this task we have distinguished signals responding to the visual stimuli, other signals that
control the production of movements, and still other signals that seem to monitor behavior.
Received: 31 March 1999 / Accepted: 23 July 1999 相似文献