全文获取类型
收费全文 | 125篇 |
免费 | 8篇 |
国内免费 | 79篇 |
出版年
2024年 | 1篇 |
2023年 | 5篇 |
2022年 | 6篇 |
2021年 | 3篇 |
2020年 | 4篇 |
2019年 | 5篇 |
2018年 | 10篇 |
2017年 | 14篇 |
2016年 | 12篇 |
2015年 | 7篇 |
2014年 | 9篇 |
2013年 | 3篇 |
2012年 | 7篇 |
2011年 | 11篇 |
2010年 | 8篇 |
2009年 | 5篇 |
2008年 | 13篇 |
2007年 | 12篇 |
2006年 | 8篇 |
2005年 | 8篇 |
2004年 | 6篇 |
2003年 | 4篇 |
2002年 | 7篇 |
2001年 | 6篇 |
2000年 | 11篇 |
1999年 | 4篇 |
1998年 | 5篇 |
1997年 | 3篇 |
1996年 | 1篇 |
1995年 | 3篇 |
1994年 | 4篇 |
1993年 | 3篇 |
1992年 | 2篇 |
1991年 | 1篇 |
1985年 | 1篇 |
排序方式: 共有212条查询结果,搜索用时 93 毫秒
211.
Event-related EEG potentials (ERP) were recorded from 75 tested adult men and women; recording was performed from C3 and C4
points. The experimental situation required internal counting of time intervals limited by two pushes of a button. The experimental
paradigm provided a substantial level of uncertainty, and a high level of attention needed to be maintained. The tested subjects
were not informed by the experimenter about the precise value of the preset time interval; they knew only its limits, 17–23
sec. The subject obtained information about the agreement or disagreement between the produced interval and its value preset
by the experimenter by visual feedback signals obtained 2 sec after termination of counting; in the case of agreement the
subject had to perform a confirming (third) push of the button. Pushes were preceded by readiness potentials (RP); contingent
negative variation (CNV) developed before the feedback signals, and the latter were accompanied by P300 potentials. Significant
positive correlations were found between the parameters of RP and P300 in both hemispheres. In general, ERP were characterized
by very high interindividual variability, which in a few respects correlated with the personality-related characteristics
of tested subjects evaluated by psychological testing with the use of corresponding questionnaires. In particular, under the
experimental conditions used, negative correlations were observed between the RP amplitude and psychotism indices, CNV amplitude
and emotional stability; CNV amplitude and extroversive features, and P300 amplitude and domination properties of a person.
Positive correlations were observed between the CNV amplitude and autia factor (according to Eysenck’s PEN and Cattell’s 16
PF questionnaires). We suppose that correlations between the personal psychical features and ERP parameters are grounded in
both inherited constitutional specificities of the nervous system and neurochemical/structural modifications in the brain
determined by the acquired vital experience. 相似文献
212.
This research explores male reproductive parameters, particularly the timing of first reproduction, in two traditional populations. Predictions are drawn from theoretical arguments that have their roots in evolutionary psychology and behavioral ecology, and that interpret variation in reproductive outcomes as environmentally contingent adaptations. In both Ache and Mayan samples, father absence, predicted to act as a stressor that causes precocious sexuality and reproduction as well as unstable pair bonds, did not affect the timing of first reproduction in male offspring in the expected way. Father absence in Mayan men, however, was found to be associated with responses to questionnaire items indicating lack of willingness to pay time and energy costs to maintain existing sexual unions. The results suggest that father absence affects male mating strategy, but that strategic differences did not translate into reproductive outcomes in the sample. In the Mayan population, education was associated with early reproduction, more lifetime sex partners, and higher fertility, which was also contrary to the predicted pattern based on a life-history tradeoff approach. Parental resources were associated with earlier reproduction in the Mayan sample, confirming the prediction that restricted resources should delay reproduction. 相似文献