全文获取类型
收费全文 | 51976篇 |
免费 | 2079篇 |
国内免费 | 30篇 |
出版年
2020年 | 581篇 |
2019年 | 733篇 |
2018年 | 1055篇 |
2017年 | 1052篇 |
2016年 | 1107篇 |
2015年 | 738篇 |
2014年 | 908篇 |
2013年 | 4508篇 |
2012年 | 1644篇 |
2011年 | 1793篇 |
2010年 | 1042篇 |
2009年 | 1060篇 |
2008年 | 1626篇 |
2007年 | 1603篇 |
2006年 | 1411篇 |
2005年 | 1282篇 |
2004年 | 1255篇 |
2003年 | 1138篇 |
2002年 | 1180篇 |
2001年 | 1747篇 |
2000年 | 1648篇 |
1999年 | 1263篇 |
1998年 | 662篇 |
1997年 | 569篇 |
1996年 | 512篇 |
1995年 | 516篇 |
1994年 | 494篇 |
1993年 | 515篇 |
1992年 | 1008篇 |
1991年 | 953篇 |
1990年 | 939篇 |
1989年 | 849篇 |
1988年 | 812篇 |
1987年 | 800篇 |
1986年 | 803篇 |
1985年 | 853篇 |
1984年 | 667篇 |
1983年 | 576篇 |
1982年 | 469篇 |
1979年 | 653篇 |
1978年 | 485篇 |
1976年 | 446篇 |
1975年 | 589篇 |
1974年 | 619篇 |
1973年 | 594篇 |
1972年 | 539篇 |
1971年 | 473篇 |
1968年 | 539篇 |
1967年 | 540篇 |
1966年 | 476篇 |
排序方式: 共有10000条查询结果,搜索用时 250 毫秒
281.
Event-related potentials (ERPs), accuracy scores, and reaction times were used to examine the recognition of emotional expressions. Adults and 7-year-old children saw upright and inverted chromatic slides of the facial expressions of happiness, fear, surprise, and anger, and were asked to press a button for either "happy" or "angry" faces. A positive-going waveform (P300) was apparent at parietal scalp (Pz) and at left and right temporal scalp. Although the behavioral data were similar for both children and adults (e.g., both had more difficulty recognizing angry expressions than happy ones, and angry expressions were more difficult to recognize upside-down than were happy faces), the ERPs indicated that children responded differently than adults did to happy and angry expressions. Adults showed greater P300 amplitude to happy faces, while children showed greater P300 amplitude to angry faces. In addition, for adults, but not children, there were greater P300 amplitude responses at right vs. left temporal scalp. 相似文献
282.
Light and Humphreys (1981, Journal of Experimental Child Psychology, 31, 521-530) provided evidence that young children's drawings, despite infrequently showing view-specific occlusion, do systematically reflect spatial relations within an array. The present research tested the hypothesis that young children's preferences for canonical "best views" interact with array-faithful tendencies to increase early uses of occlusion. Forty-three children between 4 and 7 years of age drew arrays like Light and Humphreys' end-to-end alignments, with end-on views of objects in depth, and arrays aligned side-to-side, with canonical side-views of objects in depth. Significantly fewer single-object, view-specific occlusions were produced for end-to-end than for side-to-side alignments. Nevertheless, the former reveal that more children are able to use the vertical dimension to depict multiple objects in depth. Other comparisons suggest an interaction in multiple-object depictions of canonicality with spatial dimension and graphic complexity. 相似文献
283.
This study showed that a means-end relationship between two snacks exerts a negative influence on preference for the means snack in the contingency. Two snacks ranked of approximately equal medium appeal were individually chosen from an array by each of 86 children (ages 4 years, 4 months to 7 years, 2 months). Children were then assigned to a means-end condition (where one snack was eaten as a means of gaining the other), a temporal order control group (where one snack was presented and eaten before the other), or a mere exposure control group (where the children chose the order in which they ate the two snacks). Post-treatment rankings of the snacks showed that children in the means-end group came to devalue the means snack relative to the reward snack, despite the demonstrably equal prior appeal of the two snacks. Children in the temporal order and mere exposure control groups did not come to prefer the two snacks preferentially. Implications of the finding that adults can affect children's preferences by relatively minor variations in the manner of presentation are discussed. 相似文献
284.
The intent of this study is to apply a cross-level design to examine the influence of contextual factors upon individuals' performance. The results support the hypothesis that peer group characteristics predict individual performance beyond individual characteristics. The implications for using a cross-level approach to study the effects of contextual variables on individual-level phenomena are discussed. 相似文献
285.
A scenario study was performed to investigate whether people in the street would be less likely to respond positively to a stranger's request for a small favor if the stranger wore a T-shirt bearing a progay slogan. One hundred and eighteen female and 112 male participants were each presented with six scenarios, all of which asked them to imagine being approached by a person requesting change for a banknote. The dependent variable in the study was the participant's judgment, on a 7-point scale, of how likely he or she would be to help. Five of the scenarios were included as distractors. In the critical scenario, the requester was described as wearing a plain T-shirt or one with either a progay or a control slogan printed on it. The male participants in the progay condition showed a significantly lower level of help than those in either of the control groups. The antigay pattern, however, was not obtained in the responses of the female participants. The results are discussed with reference to other findings in the literature, and their implications for people's responses to progay persons in everyday life are considered. 相似文献
286.
287.
Valerie A. Clarke Coral L. Ruffin David J. Hill Arthur L. Beamen 《Journal of applied social psychology》1992,22(8):638-656
Verbal expressions of probability are used in daily conversations, physician-physician and physician-patient communications, and questionnaire and interview responses. To assess the degree of agreement among English-speaking Australian adults in allocating numerical probabilities to these verbal expressions of probability, 966 interviewees provided estimates for 60 isolated expressions of probability and a sequence of seven items placed in a sequence. Means and median scores appeared to be consistent with common sense and with findings from other countries. Mirror-imaged terms were neither symmetrical nor equidistant, with the means and medians for the positive terms being closer to the mid-points of the scale than the means and medians of the negative terms. Items in a sequence of probability terms showed greater symmetry and less variability than isolated expressions. For most items, there was an unacceptably high level of within-subject and between-subject variability. Although subjects with higher levels of education and/ or mathematics education showed less variability, these factors accounted for very little of the variance. The greater variability in Australian results relative to those reported elsewhere was partly attributed to the use of interviews rather than questionnaires. There were no particular stems that yielded greater consistency. It was concluded that the use of these expressions leads to very imprecise communication. 相似文献
288.
Tim Kasser M.A. 《Journal of Contemporary Psychotherapy》1992,22(1):51-65
Since valuing is a process grounded in the organizational tendency of human behavior, the characteristics of a highly valued object should reflect the experience of the individual who selects it. This research compared the favorite songs of fourteen individuals diagnosed with schizophrenia to their inner experience as assessed in a standard interview. Many relationships were revealed between the two, often pertaining to important issues identified in theories of schizophrenia. Results may have therapeutic applications and shed light on processes through which psychological difficulties persist. 相似文献
289.
That observers tend to agree in their ratings of a target even if they have never interacted with that target has been called consensus at zero acquaintance. The basic finding that consensus is highest for judgments concerning a target's degree of extraversion (EV) and somewhat weaker for judgments of conscientiousness is replicated. Several potential observable cues that might be used by judges when rating targets are examined. The finding that ratings of physical attractiveness correlate with judgments of EV is replicated. In Study 1, rapid body movements and smiling were also found to correlate with EV judgments. The level of consensus declined when initially unacquainted Ss interacted one-on-one (Study 2), but did not decline--and even increased--when Ss interacted in a group (Study 3). Ss judged as extraverted at zero acquaintance were also seen as extraverted after interacting with others. 相似文献
290.
A new instrument designed to assess paranoid thought in college students, together with reliability and validity data, was presented in Study 1. A single general factor accounted for a substantial portion of the variance in the full scale. Public self-consciousness was consistently and significantly correlated with the present measure of paranoia. In Study 2, both pretested paranoia and public self-consciousness were related to feelings of being watched (a classical manifestation of paranoia), although public self-consciousness had an effect only when there was a 2-way mirror present. In Study 3, self-attention, experimentally induced using a story construction task, again resulted in a heightened sense of being observed. Discussion focuses on paranoid cognition as characteristic of everyday thought and the implications of self-attention for social perception processes. 相似文献