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241.
Correlates of work-home role conflict for dual-earner couples were examined. Respondents (N= 208) were an equal number of married, employed men and women with children. Data were collected in the northeastern U.S.A. through a survey which measured work-home role conflict, family climate, domestic responsibilities, and activities performed during one's free time. LISREL was used to determine if domestic responsibilities mediate the correlation between gender and work-home conflict. A regression analysis was used to determine the relative effects of domestic responsibilities and family climate on work-home conflict. Results indicate that (a) work-home role conflict is negatively related to family climate for men as well as for women, (b) gender differences in role conflict are partially attributable to gender differences in domestic responsibilities, and (c) domestic responsibilities and family climate each correlate significantly with work-home role conflict. Findings suggest that how one works hard (the conditions under which one lives) may be just as important as how hard one works (the number of tasks one performs).  相似文献   
242.
ABSTRACT The aim of this study was to test whether the concept of an altruistic personality was valid for first aiders who intervened to help the victims of a traffic accident. We derived a number of relevant personality variables that should be related to the willingness to administer first aid. These include locus of control, social responsibility, belief in a just world, empathy, and instrumentality. We obtained data from proven first aiders who had intervened after a traffic accident. Thirty-four of these first aiders were matched to respondents from a subject pool on the basis of sex, age, and socioeconomic status. In addition, the willingness of these respondents to offer help after a traffic accident was taken into account. Only people who indicated that they had witnessed an accident and had not helped were included in the control group. Multivariate analyses of variance and covariance indicated that proven first aiders deviated from the control group on several dimensions: They described themselves as more internal, believed more in a just world, and emphasized more social responsibility and empathy.  相似文献   
243.
The acquisition and transfer of stimulus control in discrete-trial operant feature positive and feature negative discriminations was examined in two experiments with rats. When the feature and target cues were presented simultaneously on compound training trials, the feature appeared to acquire simple excitatory or inhibitory control, which readily transferred to other target cues and which was substantially reduced by post-training counterconditioning. Conversely, when the feature preceded the target during training, the feature's control was relatively more specific to responding in the presence of its original target and less influenced counterconditioning. These results are comparable to outcomes of analogous experiments (previously reported) that used Pavlovian conditioning procedures.  相似文献   
244.
In previous studies, it has been demonstrated that visible persistence--the period for which the perceived duration of a stimulus exceeds its physical duration--can be extended by briefly incrementing the luminance of the stimulus immediately prior to offset. Using a two-component pattern integration task, we show that this effect is not an artifact of change in the total luminous flux within the stimulus. Visible persistence was unaffected by overall luminance of the stimulus. It was also time-locked to the luminance increment. Visible persistence is seen to result from a process that is initiated by stimulus onset and that can be either wholly or partially reinitiated by the onset of the luminance increment. The duration of this process (which determines the duration of stimulus visibility) can be modified in a graded fashion by stimulus events that occur after its initiation. We outline a single-process inhibitory feedback model of the persistence mechanism that accounts for the present findings.  相似文献   
245.
Reports findings from interviews with parents of demographically-comparable groups of highly-stressed urban children with stress-resilient (SR) and stress-affected (SA) outcomes at ages 10-12. SR and SA children were compared on family milieu and child development variables assessed within a developmental framework. Compared to SAs, parents of SRs scored higher on variables reflecting parent perceptions of a nurturant caregiver-child relationship and self-views as effective caregivers, in the context of positive discipline practices, a child's positive early temperament, and support for primary caregivers. A discriminant function analysis identified seven variables that optimally differentiated the groups and correctly classified 86% of the Ss as SR or SA.  相似文献   
246.
The Sociotropy-Autonomy Scale (SAS) was developed as a means of assessing two cognitive-personality constructs postulated as vulnerability factors in depression (Beck, 1983). While studies have confirmed the validity of the SAS Sociotropy Scale, the construct validity of the Autonomy Scale has not been well supported. The present study was conducted to improve on the measurement of autonomy by generating additional items which were added to the original questionnaire. This 93-item SAS was administered to 485 undergraduates along with the Beck Depression Inventory, Beck Anxiety Inventory, PRF Affiliation and Autonomy Scales, Positive and Negative Emotionality Measures, and Marlowe-Crowne Social Desirability Scale. Four factors labeled Sociotropy, Solitude/Interpersonal Insensitivity, Independence, and Individualistic Achievement emerged from a principal-factor analysis of the SAS item pool. Hierarchical multiple regression analyses indicated that positive emotionality and solitude/interpersonal insensitivity were specifically related to dysphoria, while negative emotionality and sociotropy had significant associations with both anxious and depressed mood states.This research was supported by University of New Brunswick Research Grant 22–51 awarded to the first author.  相似文献   
247.
Some decision analysts recommend reserving their models for careful, complete study of complex problems. Others believe simple problem analyses provide the greatest gains. To clarify these issues, I tested: (1) whether simple published analyses compared to complex ones, produced results as non-intuitive; and (2) whether non-intuitiveness represented analytic gain (or equivalently, intuitive loss). Very limited data also examined (3) the gain from adding model intricacy for a given problem vs. selecting more complex problems for analysis. To assess two non-intuitiveness measures, 75 subjects (33 physicians and 42) non-physicians stated their intuitive preferences in 40 (22 published and 18 unpublished) medical dilemmas. For both physicians and non-physicians, simpler models (those with lees than 30 terminal branches in the decision tree) had about one third the non-intuitiveness of more complex ones. Three tests also supported the premise that analyses outperform intuition, therefore that on average the formers' non-intuitiveness reflects less analytic gain. In addition, for different models of the same problem, tree complexity did not correlate with gain. Thus, simpler trees may not generally gain less because they inadequately describe problems. Instead, simpler analyses may represent simpler problems, with more similar intuitive and formal solutions. If so, these findings may help us avoid some costly but unnecessary simple analyses.  相似文献   
248.
249.
A high-resolution clock is often indispensable for the accurate measurement of millisecond or microsecond resolution intervals, and it is impossible to measure the probability distribution of short intervals without one. This paper describes a microsecond clock for Sun 3 and 4 workstations that we designed, built, and have made publicly available. It also explains how to measure intervals shorter than a computer’s clock resolution, and derives confidence intervals for such measurements.  相似文献   
250.
In this article, I describe a method for presenting multiple bit-mapped images on video displays under precise temporal control. The method makes use of the color-table animation technique that can be used with color-lookup-table display devices. The principal challenge in applying this technique to the display of multiple stimuli lies in dealing efficiently with the problem of overlapping displays. The solution described here is to allocate separate bit slices of screen memory to stimuli that overlap and to allocate sequential color-table indices to stimuli that are disjoint. Software is described that automatically computes the location of a stimulus on the screen, allocates color indices appropriately, transfers bit images to screen memory efficiently, and manipulates the color lookup table to present a given stimulus to the viewer. These operations are handled transparently; the user simply draws the stimuli and then turns them on or off under program control.  相似文献   
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