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131.
132.
The reduction of saccadic latency by prior offset of the fixation point: an analysis of the gap effect 总被引:13,自引:0,他引:13
The latency to initiate a saccade (saccadic reaction time) to an eccentric target is reduced by extinguishing the fixation stimulus prior to the target onset. Various accounts have attributed this latency reduction (referred to as the gap effect) to facilitated sensory processing, oculomotor readiness, or attentional processes. Two experiments were performed to explore the relative contributions of these factors to the gap effect. Experiment 1 demonstrates that the reduction in saccadic reaction time (RT) produced by fixation point offset is additive with the effect of target luminance. Experiment 2 indicates that the gap effect is specific for saccades directed toward a peripheral target and does not influence saccades directed away from the target (i.e., antisaccades) or choice-manual RT. The results are consistent with an interpretation of the gap effect in terms of facilitated premotor processing in the superior colliculus. 相似文献
133.
The ability to understand other minds is a dramatic development that enables children to adapt to their social worlds. In this first genetic analysis of the phenomenon, using 119 same-sex 3-year-old twin pairs, evidence for substantial genetic influence was found. Intraclass correlations for identical and fraternal twins were .66 and .32, respectively; the maximum-likelihoodmodel-fitting estimate of heritability was 67%. Bivariate model-fitting analyses showed that most (66%) of this genetic influence on understanding of mind was independent of verbal ability. Environmental influences on understanding of mind were attributed to child-specific factors,rather than those shared by children in the same family. 相似文献
134.
Deficits in 'executive function' (EF) are characteristic of several clinical disorders, most notably Autism Spectrum Disorders (ASD) and Attention-Deficit/Hyperactivity Disorder (ADHD). In this study, age- and IQ-matched groups with ASD, ADHD, or typical development (TD) were compared on a battery of EF tasks tapping three core domains: response selection/inhibition, flexibility, and planning/working memory. Relations between EF, age and everyday difficulties (rated by parents and teachers) were also examined. Both clinical groups showed significant EF impairments compared with TD peers. The ADHD group showed greater inhibitory problems on a Go-no-Go task, while the ASD group was significantly worse on response selection/monitoring in a cognitive estimates task. Age-related improvements were clearer in ASD and TD than in ADHD. At older (but not younger) ages, the ASD group outperformed the ADHD group, performing as well as the TD group on many EF measures. EF scores were related to specific aspects of communicative and social adaptation, and negatively correlated with hyperactivity in ASD and TD. Within the present groups, the overall findings suggested less severe and persistent EF deficits in ASD (including Asperger Syndrome) than in ADHD. 相似文献
135.
136.
Stewart SM Kennard BD Lee PW Hughes CW Mayes TL Emslie GJ Lewinsohn PM 《Journal of abnormal psychology》2004,113(2):248-257
Adolescents (N=2,272) from Hong Kong and the United States provided information regarding their depressive symptoms, cognitions (self-efficacy, negative cognitive errors, and hopelessness), and stressful events between 2 surveys 6 months apart. Depressive symptoms and hopelessness were higher, and self-efficacy and negative cognitive errors were lower in Hong Kong than in the United States. Cognitions were associated with concurrent depressive symptoms and predicted depressive symptoms 6 months later in both cultures. The "reverse" model was also supported with more variance predicted by depressive symptoms to later cognitions than from cognitions to depressive symptoms. There was some support for the hypothesis that self-efficacy is less salient in collective compared with individualistic cultures. These findings extend cognitive theories of depression to a non-Western culture. 相似文献
137.
Bornstein RF Geiselman KJ Gallagher HA Ng HM Hughes EE Languirand MA 《Journal of personality assessment》2004,82(1):104-113
Research supports the construct validity of the Relationship Profile Test (RPT; Bornstein & Languirand, 2003), a 30-item, self-report measure of destructive overdependence (DO), dysfunctional detachment (DD), and healthy dependency. In this investigation, we assessed the relationships of gender, gender role, and gender role stereotype ratings to RPT subscale scores. In Study 1, we replicated earlier patterns of gender differences in RPT scores, assessed cross-sample consistency in gender difference effect sizes, and provided preliminary nonclinical norms for the RPT subscales. Study 2 showed that--as expected--DO items are perceived as stereotypically feminine, whereas DD items are perceived as stereotypically masculine. In Study 3, we examined the relationships of RPT subscale scores to masculinity, femininity, and androgyny scores. We discuss the theoretical, empirical, and clinical implications of these findings. 相似文献
138.
Hughes RW Jones DM 《Journal of experimental psychology. Human perception and performance》2005,31(2):316-327
A novel effect is reported in which serial recall of visual digits was disrupted to a greater degree by the presence of the same set of digits presented as an irrelevant auditory sequence than by the presence of irrelevant auditory consonants, but only when the order of the irrelevant digits was incongruent with that of the to-be-remembered digits (Experiment 1). Experiment 2 replicated this order-incongruence effect and showed also that disruption was dictated by the number of order-incongruent transitions but not by the number of novel tokens contained within the irrelevant sequence. The results favor an interference-by- process approach to the disruption of serial memory by irrelevant sound over approaches based on notions of interference by content and/or interference by depletion of attentional resources. 相似文献
139.
Racial/ethnic minority women who come to identify as lesbian must confront the norms and expectations of both the majority and minority cultures in which they live. This article reports findings from a diverse sample of nearly 450 women and examines the effects of race/ethnicity on sexual identity development in African American, Latina, and White lesbians. African American and Latina respondents differed little in the timing and disclosure of lesbian identity; comparisons between women of color and White women revealed substantial variability. Findings are discussed in terms of their implications for practice with lesbians of color. 相似文献
140.
Hughes D 《American journal of community psychology》2003,31(1-2):15-33
Recently, social scientists have become increasingly interested in the nature of communications from parents to children regarding ethnicity and race. Termed racial socialization, race-related messages to children may have important consequences for children's identity development and well-being. This study examined the frequency and correlates of two dimensions of racial socialization—messages about ethnic pride, history, and heritage (Cultural Socialization) and messages about discrimination and racial bias (Preparation for Bias)—among 273 urban African American, Puerto Rican, and Dominican parents. Parents reported more frequent Cultural Socialization than Preparation for Bias. There were no significant ethnic group differences in the frequency of Cultural Socialization. However, African American parents reported more frequent Preparation for Bias than did Dominican parents who, in turn, reported more frequent messages of this sort than did Puerto Rican parents. Ethnic identity was a stronger predictor of Cultural Socialization among Puerto Rican and Dominican parents than among their African American counterparts. In contrast, perceived discrimination experiences was a stronger predictor of Preparation for Bias among African American and Dominican parents than among Puerto Rican parents. Finally, race-related phenomenon accounted for more variance in both Cultural Socialization and Preparation for Bias among parents reporting on their behaviors with children 10–17 years old as compared to parents reporting on their behaviors with children 6–9 years old. 相似文献