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881.
882.
Breast-feeding is associated with reduced perceived stress and negative mood in mothers. 总被引:3,自引:0,他引:3
Two studies examined the effects of breast-feeding on maternal stress and mood. In Experiment 1, perceived stress in the past month was compared between 28 breast-feeding and 27 bottle-feeding mothers. Breast-feeding mothers reported less perceived stress, after controlling for demographic confounds. In Experiment 2, mood ratings were assessed in the same 24 mothers both before and then after 1 breast-feeding and 1 bottle-feeding session. Breast-feeding was associated with a decrease in negative mood, and bottle-feeding was associated with a decrease in positive mood from pre- to postfeeding. Results indicated that breast-feeding buffers negative mood. These effects appeared to be attributable to the effects of breast-feeding itself and not solely to individual-differences factors. 相似文献
883.
Edward H. Ip 《Psychometrika》2002,67(3):367-386
In this paper, we propose a class of locally dependent latent trait models for responses to psychological and educational
tests. Typically, item response models treat an individual's multiple response to stimuli as conditional independent given
the individual's latent trait. In this paper, instead the focus is on models based on a family of conditional distributions,
or kernel, that describes joint multiple item responses as a function of student latent trait, not assuming conditional independence.
Specifically, we examine a hybrid kernel which comprises a component for one-way item response functions and a component for
conditional associations between items given latent traits. The class of models allows the extension of item response theory
to cover some new and innovative applications in psychological and educational research. An EM algorithm for marginal maximum
likelihood of the hybrid kernel model is proposed. Furthermore, we delineate the relationship of the class of locally dependent
models and the log-linear model by revisiting the Dutch identity (Holland, 1990).
The work is supported by a research grant from the Marshall School of Business, University of Southern California. The author
thanks the anonymous referees for their suggestions. 相似文献
884.
Ara Norenzayan Edward E. Smith Beom Jun Kim Richard E. Nisbett 《Cognitive Science》2002,26(5):653-684
The authors examined cultural preferences for formal versus intuitive reasoning among East Asian (Chinese and Korean), Asian American, and European American university students. We investigated categorization (Studies 1 and 2), conceptual structure (Study 3), and deductive reasoning (Studies 3 and 4). In each study a cognitive conflict was activated between formal and intuitive strategies of reasoning. European Americans, more than Chinese and Koreans, set aside intuition in favor of formal reasoning. Conversely, Chinese and Koreans relied on intuitive strategies more than European Americans. Asian Americans' reasoning was either identical to that of European Americans, or intermediate. Differences emerged against a background of similar reasoning tendencies across cultures in the absence of conflict between formal and intuitive strategies. 相似文献
885.
Stimulus-Specific Delay Activity in Human Primary Visual Cortex 总被引:1,自引:0,他引:1
John T. Serences Edward F. Ester Edward K. Vogel Edward Awh 《Psychological science》2009,20(2):207-214
ABSTRACT— Working memory (WM) involves maintaining information in an on-line state. One emerging view is that information in WM is maintained via sensory recruitment , such that information is stored via sustained activity in the sensory areas that encode the to-be-remembered information. Using functional magnetic resonance imaging, we observed that key sensory regions such as primary visual cortex (V1) showed little evidence of sustained increases in mean activation during a WM delay period, though such amplitude increases have typically been used to determine whether a region is involved in on-line maintenance. However, a multivoxel pattern analysis of delay-period activity revealed a sustained pattern of activation in V1 that represented only the intentionally stored feature of a multifeature object. Moreover, the pattern of delay activity was qualitatively similar to that observed during the discrimination of sensory stimuli, suggesting that WM representations in V1 are reasonable "copies" of those evoked during pure sensory processing. 相似文献
886.
Edward J Daly III Nikki J Wells Michelle S Swanger-Gagné James E Carr Gina M Kunz Ashley M Taylor 《Journal of applied behavior analysis》2009,42(3):563-574
The current study examined the accuracy of the multiple-stimulus without replacement (MSWO) preference assessment for identifying preferred common classroom activities as reinforcers with children with behavioral disorders. The accuracy of predictions from the MSWO regarding high, medium, and low stimulus preference was tested by providing contingent access to activities for completing math problems within an independent seatwork format. Overall, there was an interaction effect between preference ranking (high, medium, or low) and number of problems completed. The results confirm and extend previous findings regarding the accuracy of predictions with the MSWO. The findings also reveal, however, some individual differences that may account for instances in which student behavior did not conform to predictions of stimulus preference assessments. 相似文献
887.
Kristine D. Toomey Edward M. Levinson Eric J. Palmer 《Journal of Employment Counseling》2009,46(2):82-93
This study investigated the validity of J. L. Holland's (1997) theory of vocational personalities and work environments. The sample consisted of 241 randomly selected members of the National Association of School Psychologists, each of whom completed a demographic data form, the Self‐Directed Search‐Revised (SDS‐R; J. L. Holland, 1994) and a modified short form of the Minnesota Satisfaction Questionnaire (D. J. Weiss, R. V. Dawis, G. W. England, & L. H. Lofquist, 1967). Only limited support was found for major constructs associated with Holland's theory, although the study found several significant relationships between 3‐letter SDS‐R codes and desired role function as would be predicted by Holland's theory. 相似文献
888.
Jennifer Gross Brian Lakey Kristin Edinger Edward Orehek andDenise Heffron 《Journal of applied social psychology》2009,39(7):1609-1638
An important applied aspect of person perception occurs when college students evaluate their professors' teaching. Student evaluations of teaching typically are conceptualized as reflecting the characteristics of professors. Yet, this view overlooks the possibility that teaching evaluations also reflect the personal tastes of students, manifested as systematic disagreement among students. Large effects of personal tastes are routinely observed in person perception research and, therefore, should be expected in students' evaluations of teaching. This article describes 3 studies in which students evaluated the same professors' teaching effectiveness. In each study, students' evaluations were strongly influenced by their personal tastes regarding teaching. Moreover, personal tastes in teaching were related in meaningful ways to students' positive affect and memory for lectures. 相似文献
889.
From a social psychological process framework, this study examines how children's self-esteem influences whether their friends motivate them to go online. Children (ages 8–14; n = 293) completed an online questionnaire. Locus of control orientation is included as mediating the relationship between self-esteem and motivation. Hypotheses were tested using a structural equation model. Results reveal that children with healthy self-esteem perceive themselves as having control of their environments. This positively influences peer-related motivation to go online. Children with lower self-esteem see the world as controlled by others or as the result of luck. This external locus also positively influences peer-related motivation to go online. Girls maintained higher self-esteem, and boys were influenced by external factors. 相似文献
890.
Karen Bennett has recently argued that the views articulated by Linsky and Zalta (Philos Perspect 8:431–458, 1994) and (Philos
Stud 84:283–294, 1996) and Plantinga (The nature of necessity, 1974) are not consistent with the thesis of actualism, according
to which everything is actual. We present and critique her arguments. We first investigate the conceptual framework she develops
to interpret the target theories. As part of this effort, we question her definition of ‘proxy actualism’. We then discuss
her main arguments that the theories carry a commitment to actual entities that do not exist. We end by considering and addressing
a worry that might have been the driving force behind Bennett’s claim that Linsky and Zalta’s view is not fully actualistic.
相似文献
Edward N. ZaltaEmail: |