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341.
    
Repetitive behaviors such as excessive straightening are commonly observed among individuals with autism. Attempts to prevent these behaviors may increase the likelihood of other problem behaviors. The present study was designed to assess and treat the excessive straightening and associated destructive behaviors of a 16‐year‐old boy who had been diagnosed with autism and moderate mental retardation. Following a series of functional analyses, an intervention that incorporated functional communication, extinction of destructive behavior, and blocking of repetitive straightening was demonstrated to be effective in reducing straightening and destructive behavior.  相似文献   
342.
    
The aim of the present experiment was to examine to what extent participants experience attempted control, cognitive load and arousal when they lie and tell the truth under lower‐stakes and higher‐stakes conditions. We expected both differences and similarities between truth tellers and liars. We expected that participants would experience these processes to a higher degree when they lied compared to when they told the truth (differences), but we also expected that both liars and truth tellers would be keen to make a convincing impression; and that raising the stakes would affect liars and truth tellers in a similar way (similarities). A total of 128 participants lied and told the truth during an interview (lying and truth telling was counterbalanced). Stakes were manipulated by informing half of the participants that their interviews would be recorded on videotape and would be analysed and evaluated by police officers. The predictions were supported. Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   
343.
    
Chronic restraint stress produces retraction of apical dendrites of pyramidal neurons in medial prefrontal cortex. To begin to examine the functional significance of this dendritic reorganization, we assessed the effects of chronic restraint stress on a prefrontally mediated behavior, extinction of conditioned fear. After bar press training to obtain a baseline of activity against which to measure freezing, rats were either unstressed or stressed via placement in a plastic restrainer (3 h/day for 1 week). After an additional day of bar press training, rats underwent fear conditioning and extinction. Rats received five habituation trials to a 30-s tone (4.5 kHz, 80 db) followed by seven pairings of tone and footshock (500 ms, 0.5 mA). One hour later, rats received tone-alone extinction trials to criterion. The next day, rats received 15 additional extinction trials. Percent freezing was assessed during all phases of training. Stress did not significantly affect unconditioned responding to tone, acquisition of conditioned fear, or initial extinction, but significantly increased freezing on extinction day 2. Thus, consistent with the regressive dendritic changes seen in medial prefrontal cortex, one week of restraint stress specifically impaired recall of extinction, a pattern of deficits typical of animals with impaired medial prefrontal function.  相似文献   
344.
Objectification theory (Fredrickson and Roberts 1997) proposes that women from Western cultures are widely portrayed and treated as objects of the male gaze, leading to the development of self-objectification, in which girls and women internalize these societal messages and view their own bodies as objects to be evaluated according to narrow standards of (often sexualized) attractiveness. Prompted by findings from the American Psychological Association Task Force on the Sexualization of Girls (APA 2007), the present study considers girls?? clothing as a possible socializing influence that may contribute to the development of self-objectification in preteen girls. Accordingly, in this content analysis, we examined the frequency and nature of ??sexualizing?? clothing available for girl children (generally sizes 6?C14) on the websites of 15 popular stores in the US. Sexualizing clothing was defined as clothing that revealed or emphasized a sexualized body part, had characteristics associated with sexiness, and/or had sexually suggestive writing. Clothing was also coded for childlike characteristics, such as child-like fabric (e.g., polka dot pattern) or a modest, non-revealing cut. Across all stores and all articles of clothing, 69% of the clothing items were coded as having only childlike characteristics, 4% as having only sexualizing characteristics, 25.4% as having both sexualizing and childlike characteristics, and 1% as having neither sexualizing nor childlike characteristics. ??Tween?? stores like Abercrombie Kids had the highest proportion of sexualizing clothing. The findings are discussed within the framework of the development of self-objectification.  相似文献   
345.
Although dozens of studies have examined the autonomic nervous system (ANS) aspects of negative emotions, less is known about ANS responding in positive emotion. An evolutionary framework was used to define five positive emotions in terms of fitness-enhancing function, and to guide hypotheses regarding autonomic responding. In a repeated measures design, participants viewed sets of visual images eliciting these positive emotions (anticipatory enthusiasm, attachment love, nurturant love, amusement, and awe) plus an emotionally neutral state. Peripheral measures of sympathetic and vagal parasympathetic activation were assessed. Results indicated that the emotion conditions were characterized by qualitatively distinct profiles of autonomic activation, suggesting the existence of multiple, physiologically distinct positive emotions.  相似文献   
346.
Colored target words were presented with distractor nonwords in a rapid serial visual presentation (RSVP) task. In Experiment 1, the attentional blink (AB) effect on T2 accuracy was larger when T1 was a difficult (low-frequency) word than when it was a high-frequency word. In Experiment 2 the effect of T1 frequency on the AB was replicated in a between-participants design, and the frequency of T1’s one-letter different neighbors (e.g., case, bare, for care) interacted with T1 frequency in its effects on T2 accuracy. Experiment 3 confirmed the effect of T1 frequency over 6 T1-T2 lags. The effects of T1 characteristics were sensitively assessed in the AB and were more consistent with resource depletion theories than control-process accounts.  相似文献   
347.
Presently, objectification theory has yielded mixed results when utilized to explain body image concerns in men. An online survey assessing internalization of media ideals, self-objectification, body surveillance, body shame, the drive for muscularity, and body mass index (BMI) was completed by 244 predominantly college-aged males. Path analyses were used to investigate relationships among these variables where it was hypothesized that objectification variables would mediate the relationship between internalization of media ideals and the drive for muscularity. Internalization of media ideals was the strongest predictor of the drive for muscularity, followed by BMI, though variables of objectification theory had no impact on the drive for muscularity contrary to hypotheses. The results suggest that objectification theory may not be applicable to men as it is currently measured.  相似文献   
348.
The generality of the mathematical principles of reinforcement (MPR) was tested with humans. In Experiment 1A, participants’ mouse clicks were reinforced according to a series of variable-ratio (VR) values. In one condition, a situated task was used (searching for treasure on a map presented via a PC monitor); in the other, abstract version of the task, participants clicked on a white screen. Under the “map” condition, response rates increased with increasing ratio value before decreasing with further ratio increases; under the “no-map” condition, response rates decreased linearly from a peak at the smallest ratio. In Experiment 1B, the pattern of responding was confirmed under the “map” conditions using a different set of ratio values. In Experiment 2, reinforcer magnitude was manipulated using the “map” context. Response rates did not differ significantly when large rather than small cash reinforcers were delivered according to a VR 30 but were significantly higher when large rather than small cash reinforcers were delivered according to a VR 120. Together these experiments offer qualified support for extending MPR to the behavior of human participants.  相似文献   
349.
Copeland  Samantha 《Synthese》2019,196(6):2385-2406
Synthese - ‘Serendipity’ is a category used to describe discoveries in science that occur at the intersection of chance and wisdom. In this paper, I argue for understanding serendipity...  相似文献   
350.
This study examines counter‐interrogation strategies employed by liars giving false alibis. Participants (N = 144) visited a restaurant to buy a sandwich (truth‐tellers) or to use it as a false alibi (liars). Half of the liars were informed they might be asked for a drawing of the alibi setting if interviewed (informed liars). Participants spent either 10 min (high familiarity condition) or 30 s (low familiarity condition) in the restaurant. All participants were asked to provide two visuospatial statements, which were assessed for salient details, nonsalient details, between‐statement consistency, and statement‐alibi setting consistency. Informed liars provided significantly more salient and nonsalient details than uninformed liars and truth‐tellers, particularly in the high familiarity condition. No differences emerged for statement consistency types. The results suggest that liars are more concerned than truth‐tellers about making a positive impression on the interviewer, and they fail to accurately reflect on truth‐tellers' visuospatial statements.  相似文献   
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