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11.
Microcomputers have great applicability for psychological laboratories. While it is usual to limit discussions of microcomputers to 8-bit equipment, 16-bit machines have several advantages. In many situations, these systems prove to be more efficient and cost effective.  相似文献   
12.
Selective attention to multidimensional auditory stimuli   总被引:3,自引:0,他引:3  
Event-related brain potentials (ERPs) elicited by multidimensional auditory stimuli were recorded from the scalp in a selective-attention task. Subjects listened to tone pips varying orthogonally between two levels each of pitch, location, and duration and responded to longer duration target stimuli having specific values of pitch and location. The discriminability of the pitch and location attributes was varied between groups. By examining the ERPs to tones that shared pitch and/or locational cues with the designated target, we inferred interrelationships among the processing of these attributes. In all groups, stimuli that failed to match the target tone in an easily discriminable cue elicited only transitory ERP signs of selective processing. Tones sharing the "easy" but not the "hard" cue with the target elicited ERPs that indicated more extensive processing, but not as extensive as stimuli sharing both cues. In addition, reaction times and ERP latencies to the designated targets were not influenced by variations in the discriminability of pitch and location. This pattern of results is consistent with parallel, self-terminating models and holistic models of processing and contradicts models specifying either serial or exhaustive parallel processing of these dimensions. Both the parallel, self-terminating models and the holistic models provide a generalized mechanism for hierarchical stimulus selections that achieve an economy of processing, an underlying goal of classic, multiple-stage theories of selective attention.  相似文献   
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Social influence processes affecting adolescent substance use   总被引:14,自引:0,他引:14  
Social influence is central to models of adolescent substance use. Nonetheless, researchers fail to delineate the various forms of social influence. A framework that distinguishes between active (explicit drug offers) and passive (social modeling and overestimation of friends' use) social pressure was tested. The effect of these processes on alcohol and cigarette use was examined with 526 seventh graders taking part in an alcohol prevention program. Hierarchical regression analyses demonstrated that pretest measures of alcohol use, offers, modeling, and overestimation each accounted for unique variance in posttest alcohol use. Similar results were obtained for cigarette smoking. The general model was not significantly different for boys and girls, or for prior users and prior nonusers, supporting the generalizability of the framework. Implications for intervention programs are discussed.  相似文献   
15.
Two studies were conducted to examine whether attributions made about events may be influenced by individual assumptions regarding causation that are age related. In Study 1, 96 subjects at three age levels (four and five years, eight and nine years, and college students) observed a target actor on videotape select an item from an unseen array, and four other actors either agree (high consensus) or disagree (low consensus) with the choice. Subjects were asked to decide why the actor liked the chosen object best—because of something about the actor (person attribution) or because of something about the item (entity attribution). The results showed that perceived locus of causality shifted from entity to person attributions with age. In addition, subjects at all ages were able to utilize the consensus information when they had no opportunity to form their own impressions about the items in the array. In Study 2, 126 subjects at four age levels (five and six years, seven and eight years, nine and ten years, and high school students) chose an item from among an array for themselves and responded to a person (self)/entity attribution question regarding the locus of their own choice. The entity to person shift with age was again found and was supported by additional measures. The results are discussed in terms of children's causal reasoning capacities and social environmental factors affecting developmental change in social judgments.  相似文献   
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This study investigated the differences in vocational attitude maturity and self-concept among Holland's six vocational categories. Data regarding self-concept, vocational attitude maturity, and vocational preference were gathered from 846 students randomly selected from grades 8–12 in an urban school system. An analysis of variance supported the research hypotheses: (1) There were significant differences in vocational attitude maturity among students in the six vocational categories; (2) there were significant differences in self-concept among students in the six vocational categories; (3) there was a significant relationship between vocational attitude maturity and self-concept among students in specific vocational categories.  相似文献   
18.
Personality and coping were specified as predictors of emotional outcomes of a mildly stressful medical procedure. Situation-specific coping was examined in contrast to dispositional coping, and it was tested whether one or the other would mediate the relationship between higher-order personality factors and stress outcomes. Cataract patients (N=110) participated at four measurement points in time during a six-week period surrounding their scheduled surgery. Dispositional coping did not mediate the personality–outcome relationship. In contrast, situation-specific coping acquired a mediator status between personality and adaptational criteria and accounted for independent outcome variance once personality traits were included as predictors in the models. Thus, the data suggest that whether or not coping mediates between personality factors and affective outcomes may be related to the methodological approaches of its operationalization. Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   
19.
Journal of Behavioral Education - Numerous developmental difficulties differentiate children with autism from typically developing children, including delays in social communication skills. In this...  相似文献   
20.
Kahneman and Tversky (1984) proposed that decision makers perceive choice uncertainty in two ways: (1) as a distribution of possible outcomes or (2) as a single uncertain outcome. Using statistical training as a factor that influences these perceptions, and thus the type of decision approach individuals use, we found that individuals with different levels of experience displayed differences in the decisions they made and in the choice heuristics used to make those decisions. Statistically naive individuals were more likely to prefer loss-minimizing alternatives, use a more non-compensatory heuristic, and spend more time on loss-related information than their statistically experienced counterparts. When a distributional cue, indicating the distributional nature of choice outcomes, was presented to both experience groups, the naive group was found to use a decision approach similar to the experienced group and to make similar decisions. The results are discussed in terms of the need to include factors that alter individuals' approaches to uncertainty in future behavioral models of uncertain choice.  相似文献   
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