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281.
Daniela Renger Alex Mommert Sophus Renger Marcel Miché Bernd Simon 《Basic and applied social psychology》2019,41(1):34-47
In this research, we tested equality-based respect from ingroup members as a social antecedent of positive assertiveness (i.e., voicing one’s opinions) and group performance. A pretest with employees at the workplace supported that the variables of interest were indeed correlated. The main experimental study then confirmed that participants who had received high as compared with low intragroup respect displayed more assertive behavior and yielded higher group performance in dyadic intragroup discussions. In contrast, high intergroup respect (i.e., from outgroup members) lowered assertiveness and performance levels in intergroup interactions relative to low respect. We discuss implications for social interactions and discourses. 相似文献
282.
Activities, self-referent memory beliefs, and cognitive performance: evidence for direct and mediated relations 总被引:1,自引:0,他引:1
In this study, the authors investigated the role of activities and self-referent memory beliefs for cognitive performance in a life-span sample. A factor analysis identified 8 activity factors, including Developmental Activities, Experiential Activities, Social Activities, Physical Activities, Technology Use, Watching Television, Games, and Crafts. A second-order general activity factor was significantly related to a general factor of cognitive function as defined by ability tests. Structural regression models suggested that prediction of cognition by activity level was partially mediated by memory beliefs, controlling for age, education, health, and depressive affect. Models adding paths from general and specific activities to aspects of crystallized intelligence suggested additional unique predictive effects for some activities. In alternative models, nonsignificant effects of beliefs on activities were detected when cognition predicted both variables, consistent with the hypothesis that beliefs derive from monitoring cognition and have no influence on activity patterns. 相似文献
283.
We argue that episodic remembering, understood as the ability to re-experience past events, requires a particular kind of
introspective ability and understanding. It requires the understanding that first person experiences can represent actual
events. In this respect it differs from the understanding required by the traditional false belief test for children, where
a third person attribution (to others or self) of a behavior governing representation is sufficient. The understanding of
first person experiences as representations is also required for problem solving with images. In support of this argument
we review developmental evidence that children’s episodic remembering is independent of and emerges after mastery of the false
belief task but emerges together with the use of imagery for solving visual rotation tasks. 相似文献
284.
We have previously reported that extinction of escape behavior in the water maze due to the removal of the platform coincided with the development of behavioral "despair" in aged and adult rats, as assessed by immobility. The present study examines further predictions derived from the hypothesis that the withholding of reinforcement induces behaviors akin to depression. We tested for correlations between extinction performance and immobility, as well as between immobility and measures of anxiety in aged and adult rats. Age comparisons were also performed on these variables. Forty aged and 29 adult male Wistar rats (24 and 3 months old, respectively) were examined in the open field, black/white box and elevated-plus maze followed by 6 days of training in the water maze hidden platform task and 8 days of extinction without the platform. Indices of immobility increased over trials of extinction, with the aged showing higher levels, earlier onsets and larger slope increases of immobility than the adults. A lower resistance-to-extinction was predictive of more "despair" in both age groups. Between-group differences in the open field, black/white box and elevated-plus maze indicated that the aged showed more anxiety-like behavior than the adults and/or explored these environments less. Within the aged group, indicators of fearfulness in the three tests were predictive of higher levels of "despair". The extinction-despair model is held to provide the promise of a conceptual and empirical model of human depression that is the consequence of withdrawal of reinforcement. 相似文献
285.
Associative recognition and recall depend on structures in the medial temporal lobes (MTLs). There is disagreement about whether associative memory is functionally heterogeneous, whether it is functionally distinct from intra-item associative memory and how the MTLs contribute to this kind of memory. Despite an increase in research on associative memory, work has lacked a theoretical framework to guide design and interpretation of studies. One view provides a useful framework by postulating that associative memories differ in the degree to which their informational components converge in MTL structures that create familiarity-supporting or recollection-supporting memory representations. Using this framework, we consider psychological, lesion and functional imaging evidence, highlighting how informational convergence in the brain underlies the associative nature of both memory and perception. 相似文献
286.
Before 12 months of age, infants have difficulties coordinating and sequencing their movements to retrieve an object concealed in a box. This study examined (a) whether young infants can discover effective retrieval solutions and consolidate movement coordination earlier if exposed regularly to such a task and (b) whether different environments, indexed by box transparency, would impact the rate of learning and time of discovery of these solutions. Infants (N=12) were presented with an object retrieval task every week from 6 1/2 months of age until they were able to retrieve the toy from the box using coordinated two-handed patterns for 3 weeks. To reach that criterion, infants tested with an opaque box took 2 1/2 months and infants tested with a semitransparent box took 1 1/2 months. Both groups outperformed age-matched controls who received a one-time exposure to the task. Repeated exposure to the task and vision of the toy significantly enhanced this process of solution discovery. 相似文献
287.
This study examined 3-year-olds' explanations for actions of theirs that were premised on a false belief. In Experiment 1, children stated what they thought was inside a crayon box. After stating "crayons," they went to retrieve some paper to draw on. Children were then shown that the box contained candles and were asked to (a) state their initial belief and (b) explain their action of getting paper. Children who were unable to retrieve their false belief were unable to correctly explain their action. Experiments 2 and 3 ruled out several alternative interpretations for these findings. In Experiment 4, children planned and acted on their false belief. Again, children who were unable to retrieve their false belief were unable to correctly explain their action. 相似文献
288.
Activation of midbrain structures by associative novelty and the formation of explicit memory in humans
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Schott BH Sellner DB Lauer CJ Habib R Frey JU Guderian S Heinze HJ Düzel E 《Learning & memory (Cold Spring Harbor, N.Y.)》2004,11(4):383-387
Recent evidence suggests a close functional relationship between memory formation in the hippocampus and dopaminergic neuromodulation originating in the ventral tegmental area and medial substantia nigra of the midbrain. Here we report midbrain activation in two functional MRI studies of visual memory in healthy young adults. In the first study, participants distinguished between familiar and novel configurations of pairs of items which had been studied together by either learning the location or the identity of the items. In the second study, participants studied words by either rating the words' pleasantness or counting syllables. The ventral tegmental area and medial substantia nigra showed increased activation by associative novelty (first study) and subsequent free recall performance (second study). In both studies, this activation accompanied hippocampal activation, but was unaffected by the study task. Thus midbrain regions seem to participate selectively in hippocampus-dependent processes of associative novelty and explicit memory formation, but appear to be unaffected by other task-relevant aspects. 相似文献
289.
Meisel DV Byrne RA Kuba M Mather J Ploberger W Reschenhofer E 《Journal of comparative psychology (Washington, D.C. : 1983)》2006,120(3):191-197
Octopus macropus and Octopus vulgaris have overlapping habitats and are exposed to similar temporal changes. Whereas the former species is described as nocturnal in the field, there are conflicting reports about the activity time of the latter one. To compare activity patterns, the authors tested both species in the laboratory. Octopuses were exposed to a light-dark cycle and held under constant dim light for 7 days each. O. macropus showed nocturnal and light-cued activity. According to casual observations, O. vulgaris started out nocturnal but had switched to mostly diurnal when the experiment began. Individual variation of its activity was found. The different activity patterns of O. macropus and O. vulgaris might reflect their lifestyles, the latter species being more generalist. 相似文献
290.
Male Wistar rats were exposed to one-trial step-down inhibitory avoidance training using a 0.5 mA footshock. Through bilaterally implanted indwelling cannulae, they received bilateral 0.5 microL infusions of saline, mecamylamine (1.0 or 10.0 microg/side), or nicotine (0.6 or 3.0 microg/side) into the basolateral complex of the amygdaloid nucleus (BLA). Infusions were either 10 min before training (Experiment 1) or 4 min after training (Experiment 2). In Experiment 1, the animals were tested three times: first for working memory (WM) 5 s after training, then for short-term memory (STM) 90 min later, and finally for long-term memory (LTM) 24 h later. Mecamylamine depressed and nicotine enhanced WM, STM, and LTM. In Experiment 2, the treatments were given after WM was presumably over. Again, mecamylamine inhibited and nicotine enhanced STM and LTM. The results indicate that nAChRs in BLA participate in the regulation of WM formation and STM and LTM acquisition and consolidation. 相似文献