全文获取类型
收费全文 | 27914篇 |
免费 | 274篇 |
国内免费 | 5篇 |
出版年
2021年 | 55篇 |
2020年 | 91篇 |
2019年 | 106篇 |
2018年 | 3571篇 |
2017年 | 2924篇 |
2016年 | 2386篇 |
2015年 | 314篇 |
2014年 | 202篇 |
2013年 | 845篇 |
2012年 | 831篇 |
2011年 | 2627篇 |
2010年 | 2660篇 |
2009年 | 1672篇 |
2008年 | 1956篇 |
2007年 | 2435篇 |
2006年 | 304篇 |
2005年 | 463篇 |
2004年 | 404篇 |
2003年 | 409篇 |
2002年 | 326篇 |
2001年 | 139篇 |
2000年 | 166篇 |
1999年 | 148篇 |
1998年 | 123篇 |
1997年 | 136篇 |
1996年 | 117篇 |
1995年 | 126篇 |
1994年 | 98篇 |
1993年 | 118篇 |
1992年 | 103篇 |
1991年 | 92篇 |
1990年 | 87篇 |
1989年 | 82篇 |
1988年 | 86篇 |
1987年 | 100篇 |
1986年 | 82篇 |
1985年 | 93篇 |
1984年 | 116篇 |
1983年 | 119篇 |
1982年 | 107篇 |
1981年 | 103篇 |
1980年 | 111篇 |
1979年 | 108篇 |
1978年 | 115篇 |
1977年 | 107篇 |
1976年 | 121篇 |
1975年 | 91篇 |
1974年 | 94篇 |
1973年 | 89篇 |
1972年 | 62篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
171.
Two experiments evaluated the effect of commitment on paper recycling. Using an ABA design, Experiment 1 asked 24 individuals in a retirement home to sign a 4-week group commitment pledge to recycle paper. During this intervention, the subjects recycled 47% more paper than they had during baseline. They continued to recycle at this level during a 4-week follow-up period, when the group commitment was removed. Experiment 2 evaluated the relative effectiveness of group commitment, individual commitment, and token reinforcers on paper recycling in a college dormitory. The students in all three experimental conditions recycled from three to five times more paper than those in the control group during the 4-week intervention. However, in the 3-week follow-up period, when the treatments were removed, only the individually committed subjects continued to recycle significantly more paper than the controls. 相似文献
172.
Rodger Beehler 《Studies in Philosophy and Education》1990,10(4):315-335
The essay examines the argument advanced by E.D. Hirsch, Jr., for instituting ‘cultural literacy’ as a fundamental priority of schools. A number of confusions and equivocations in Hirsch's reasoning are identified, and the propensity of his project to indoctrinate is exposed. Among the features of Hirsch's argument shown to be troubling are his shifting construal of ‘language’, his inconsistency about the requirements of cultural literacy, and his uncritical relation to traditional images of the American past and present. The upshot is to raise the question why Hirsch's project has elicited wide support and praise. 相似文献
173.
Two experiments using recall of sentences examined two contrasting principles of clause ordering in a type of complex sentences: the main-clause-first (syntactic) principle and the event-order (or temporal-causal order) prir ciple. In Experiment 1, these two principles were studied in complex sentences with a main clause and a subordinate adverbial clause-e.g., When she heard the thunder, she stopped playing Frisbee. In sentences of this type the subordinate clause typically describes a temporally or causally antecedent event, while the main clause describes a subsequent event in the temporal-causal sequence. These two principles make opposite predictions on what is the psychologically simpler or preferred order of the two clauses in this type of complex sentence. Results of Experiment 1 showed an overall preference in memory for main-clause-first order. In Experiment 2, complex sentences with a main clause and a subordinate clause not temporally or causally related were also used in a sentence recall task. Similar results were obtained. The implication of these findings for the determinants of linguistic structures was discussed. 相似文献
174.
175.
Richard E. Ham 《Journal of Fluency Disorders》1990,15(5-6):305-315
The response of lay persons to pseudostuttering in approximately 200 spontaneous communication situations were reported and evaluated by 24 graduate students in an advanced class in fluency disorders. The students each spent a day as a “stutterer” in all speech contacts. They summarized their pseudostuttering efforts, the perceived auditor reactions, and their own feelings, in each situation. Results indicated that most lay reactions to any stuttering behavior were, at best, neutral or characterized by obvious changes in behavior. Many reactions were overtly and strongly negative. Student reactions were consistently ones of anxiety, fear, the desire to avoid, frustration, and irritation. Feelings of anger and humiliation were common. Discussion of results points out the value of pseudostuttering experience in clinician training, the possible importance of attitude and adjustment consideration in management of clients who stutter, and the apparent failure of (and need for) our profession to educate the lay public about communicative disorders. 相似文献
176.
Richard E. Nisbett 《Motivation and emotion》1990,14(4):255-263
Evolutionary approaches to behavior, so far from indicating that human behavioral patterns must be universal and wired, actually provide us with good reasons for expecting cultural diversity and good tools for showing how it might develop. Even gender-role related behavior may be very plastic. Highly macho male behavior may be an adaptation to dangerous ecological and economic constraints. Similarly, homicide rates differ massively from culture to culture and may be under the control of specificable ecological and economic constraints.Adapted from a symposium talk given at the annual meeting of the Society for Experimental Social Psychology, October 13, 1990, Buffalo, New York. David Buss, Nancy Cantor, and Claude Steele made helpful comments on earlier versions of this paper. 相似文献
177.
This study investigated sex stereotypes as natural language categories. Ten years ago, sex stereotypes were found to have a core-peripheral structure similar to that of the nonevaluative categories studies by Rosch (1973). Changes and stability in these conceptions were studied by having 56 female and 56 male undergraduate students rate 217 adjectives on Likert scales according to how well each adjective represented their own view of typical Men or Women. Mean ratings were analyzed to reveal a structure of core, peripheral, and nonmembers for Men and for Women. As was the case ten years ago, core traits reflected dimensions of “niceness-nurturance” for Women and “potency-strength” for Men. Female students also viewed Women as “competent,” while male students also viewed Women as “socially effective.” Adjectives that constituted the core for one category were generally placed in the periphery for the other category. As compared to ten years ago, the peripheries of the categories were expanded and showed a greater degree of overlap. College students' conceptions of Men and Women are best characterized as overlapping rather than as bipolar opposites. The formation of sex stereotype categories was discussed in terms of cognitive and social learning processes. 相似文献
178.
179.
Linda C. Mayes Ruth Feldman Richard H. Granger O.Maurice Haynes Marc H. Bornstein Richard Schottenfeld 《Infant behavior & development》1997,20(4):578
The face-to-face interactions of 43 polydrug-with-cocaine-using mothers and their infants at 3 and 6 months were compared to 17 non-cocaine-but other-drug-using mothers and 21 mothers who used no drugs during their pregnancy. Coders blind to mothers' drug use status scored 3 min of face-to-face interactions for 16 measures of maternal and infant interactive behaviors. A principal component of 7 behaviors formed a measure of maternal attentiveness; a principal component of 5 behaviors formed a measure of mother-infant dyadic organization; and a principal component of 4 behaviors formed a measure of infant readiness to interact. A measure of maternal interruption was computed as the mean standard score of 3 additional interruptive behaviors. At 3 and 6 months, polydrug-with-cocaine-using mothers were less attentive to interactions, and polydrug-with-cocaine-using mothers and their infants engaged in fewer dyadic interactions than either non-cocaine or non-drug-using mothers. Compared to 3 months, polydrug-with-cocaine-using mothers at 6 months were less attentive to interactions and more frequently interrupted interactions by looking away, redirecting the infant, or withdrawing, whereas non-cocaine-using and non-drug- using mothers showed no change or an improvement in attentiveness to interactions and a decrease in interruptions. No differences emerged in the interactive behaviors of the infants of polydrug- with-cocaine-using, non-cocaine-using, or non-drug-using mothers. Cocaine use represents a significant risk for diminished parental attentiveness and responsiveness to infants and for diminished interactiveness in infants. 相似文献
180.
Richard E. Palmer 《Man and World》1997,30(1):5-33
Husserl received from Martin Heidegger a copy of his Kant and the Problem of Metaphysics in the summer of 1929 not long before Husserl had determined to reread Heidegger's writings in order to arrive at a definitive position on Heidegger's philosophy. With this in view, Husserl reread and made extensive marginal comments in Being and Time and Kant and the Problem of Metaphysics. This essay by the translator of the remarks in KPM offers some historical background and comment on the importance of the remarks in KPM and attempts to describe Husserl's counterposition to Heidegger on six issues that divided the two major twentieth century philosophers. 相似文献