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801.
Although educational attainment has been found to be moderately heritable, research has yet to explore candidate genes for it. Drawing on data from the National Longitudinal Study of Adolescent Health, in the current study, we examined the association between polymorphisms in three dopaminergic genes (DAT1, DRD2, and DRD4), a dopamine index, and educational attainment. Statistically significant effects were found for DAT1, DRD2, DRD4, and the dopamine index for highest level of education. This study is the first to our knowledge that links measured genes to educational attainment. 相似文献
802.
Prior research on the effects of office redesign on work-related outcomes has been largely atheoretical and yielded mixed and conflicting findings. Expanding on individual reactions to office design changes as specified by social interference theory, we propose that office redesign affects organizational commitment and this relationship is mediated by employee perceptions of the broader work environment. This conceptual model is tested using 121 financial services employees who experience office redesign and 136 who do not. Results indicate that perceptions of innovation and collaboration mediate the effects of office redesign over and above negative personal reactions such that affective organizational commitment is enhanced among those experiencing reconfigured offices. Findings provide support for an expanded rendition of social interference theory that provides for favorable (as well as unfavorable) employee reactions to office redesign. Such a theoretical explanation is asserted to increase understanding of how the physical environment influences employee attitudes. 相似文献
803.
804.
The purpose of this study was to explore individual patterns of strengths and weaknesses in children's mathematical knowledge about common fractions. Tasks that primarily measure either conceptual or procedural aspects of mathematical knowledge were assessed with the same children in their fourth- and fifth-grade years (N=181, 56% female and 44% male). Procedural knowledge was regressed on levels of conceptual knowledge, and vice versa, to obtain residual scores. Residual scores capture variability in each kind of math knowledge that is not shared with the other type of knowledge. Cluster analysis using residuals indicated four distinct knowledge profiles in fourth graders: (a) higher than expected conceptual knowledge and relatively lower procedural knowledge, (b) relatively lower conceptual knowledge and higher procedural knowledge, (c) lower concepts but expected levels of procedural knowledge, and (d) relatively higher than expected levels of both procedural and conceptual knowledge. In fifth grade, another cluster emerged that showed lower procedures but expected levels of conceptual knowledge. In general, students with relatively lower than expected conceptual knowledge showed poorer accuracy on measures used to form the clusters and also word problem setups and estimation of sums. Implications for explaining seemingly conflicting results from prior work across studies are discussed. 相似文献
805.
Despite a growing interest in the question of tool-use development in infants, no study so far has systematically investigated how learning to use a tool to retrieve an out-of-reach object progresses with age. This was the first aim of this study, in which 60 infants, aged 14, 16, 18, 20, and 22months, were presented with an attractive toy and a rake-like tool. There were five conditions of spatial relationships between the toy and the tool, going from the toy and tool being connected to there being a large spatial gap between them. A second aim of the study was to evaluate at what age infants who spontaneously fail the task can learn this complex skill by being given a demonstration from an adult. Results show that even some of the youngest infants could spontaneously retrieve the toy when it was presented inside and touching the top part of the tool. In contrast, in conditions with a spatial gap, the first spontaneous successes were observed at 18months, suggesting that a true understanding of the use of the tool has not been fully acquired before that age. Interestingly, it is also at 18months that infants began to benefit from the demonstration in the conditions with a spatial gap. The developmental steps for tool use observed here are discussed in terms of changes in infants' ability to attend to more than one item in the environment. The work provides insight into the progressive understanding of tool use during infancy and into how observational learning improves with age. 相似文献
806.
The Psychological Record - Experimenter effects have long been hypothesized to influence participants’ responses to mental stress testing. To explore the influence of experimenter warmth on... 相似文献
807.
This study tested the oblique four-factor model of the Gender Role Conflict Scale for a sample of gay men and lesbian women residing in the United States. 400 gay men and 292 lesbian women recruited from university and college gay, lesbian, bisexual, and transgender LISTSERVs participated. The internal consistency reliability of the Gender Role Conflict Scale scores was high, but low means on the expressive dimension of gender role conflict were noted. The results of two separate sets of confirmatory factor analyses indicated that the four-factor model's fit to the data could be enhanced for both groups by applying item parceling to lower the number of indicators per factor, suggesting that the actual structural validity of the Gender Role Conflict Scale may be better than suggested by the reported fit indices. 相似文献
808.
Angela N. FellnerGerald Matthews Kevin D. ShockleyJoel S. Warm Moshe ZeidnerLisa Karlov Richard D. Roberts 《Journal of research in personality》2012,46(3):239-247
Individuals may differ in their ability to learn the significance of emotional cues within a specific context. If so, trait emotional intelligence (EI) may be associated with faster cue learning. This study (N = 180) tested whether trait EI predicts faster learning of a critical cue for discriminating “terrorists” from “non-terrorists”, using virtual-reality heads as stimuli. The critical cue was either facial emotion (positive or negative), or a neutral feature (hat size). Cognitive ability and subjective state were also assessed. Participants were faster to learn with an emotive cue. Surprisingly, high trait EI was correlated with poorer performance, especially early in learning. Subjective distress was also associated with impaired learning to emotive cues. 相似文献
809.
Here, we demonstrate that the decision to conform to another person’s memory involves a strategic trade-off that balances
the accuracy of one’s own memory against that of another person. We showed participants three household scenes, one for 30 s,
one for 60 s, and one for 120 s. Half were told that they would encode each scene for half as long as their virtual partner,
and half were told that they would encode each scene for twice as long as their virtual partner. On a subsequent two-alternative-forced
choice (2AFC) memory test, the simulated answer of the partner (accurate, errant, or no response) was shown before participants
responded. Conformity to the partner’s responses was significantly enhanced for the 30-s versus the 60- and 120-s scenes.
This pattern, however, was present only in the group who believed that they had encoded each scene for half as long as their
partner, even though the short-duration scene had the lowest baseline 2AFC accuracy in both groups and was also subjectively
rated as the least memorable by both groups. Our reliance on other people’s memory is therefore dynamically and strategically
adjusted according to knowledge of the conditions under which we and other people have acquired different memories. 相似文献
810.
We defend a set of acceptance rules that avoids the lottery paradox, that is closed under classical entailment, and that accepts uncertain propositions without ad hoc restrictions. We show that the rules we recommend provide a semantics that validates exactly Adams?? conditional logic and are exactly the rules that preserve a natural, logical structure over probabilistic credal states that we call probalogic. To motivate probalogic, we first expand classical logic to geo-logic, which fills the entire unit cube, and then we project the upper surfaces of the geo-logical cube onto the plane of probabilistic credal states by means of standard, linear perspective, which may be interpreted as an extension of the classical principle of indifference. Finally, we apply the geometrical/logical methods developed in the paper to prove a series of trivialization theorems against question-invariance as a constraint on acceptance rules and against rational monotonicity as an axiom of conditional logic in situations of uncertainty. 相似文献