全文获取类型
收费全文 | 3790篇 |
免费 | 231篇 |
出版年
2023年 | 37篇 |
2022年 | 52篇 |
2021年 | 61篇 |
2020年 | 85篇 |
2019年 | 114篇 |
2018年 | 155篇 |
2017年 | 168篇 |
2016年 | 148篇 |
2015年 | 124篇 |
2014年 | 137篇 |
2013年 | 481篇 |
2012年 | 197篇 |
2011年 | 221篇 |
2010年 | 123篇 |
2009年 | 131篇 |
2008年 | 185篇 |
2007年 | 174篇 |
2006年 | 150篇 |
2005年 | 151篇 |
2004年 | 132篇 |
2003年 | 114篇 |
2002年 | 124篇 |
2001年 | 48篇 |
2000年 | 50篇 |
1999年 | 51篇 |
1998年 | 47篇 |
1997年 | 37篇 |
1996年 | 39篇 |
1995年 | 26篇 |
1994年 | 25篇 |
1993年 | 24篇 |
1992年 | 30篇 |
1991年 | 20篇 |
1990年 | 19篇 |
1989年 | 22篇 |
1988年 | 20篇 |
1987年 | 19篇 |
1986年 | 14篇 |
1985年 | 27篇 |
1984年 | 20篇 |
1983年 | 22篇 |
1982年 | 30篇 |
1981年 | 26篇 |
1980年 | 20篇 |
1979年 | 19篇 |
1978年 | 17篇 |
1977年 | 13篇 |
1976年 | 16篇 |
1975年 | 9篇 |
1973年 | 10篇 |
排序方式: 共有4021条查询结果,搜索用时 500 毫秒
931.
This research provided the first empirical investigation of how approach and avoidance motives for sacrifice in intimate relationships are associated with personal well-being and relationship quality. In Study 1, the nature of everyday sacrifices made by dating partners was examined, and a measure of approach and avoidance motives for sacrifice was developed. In Study 2, which was a 2-week daily experience study of college students in dating relationships, specific predictions from the theoretical model were tested and both longitudinal and dyadic components were included. Whereas approach motives for sacrifice were positively associated with personal well-being and relationship quality, avoidance motives for sacrifice were negatively associated with personal well-being and relationship quality. Sacrificing for avoidance motives was particularly detrimental to the maintenance of relationships over time. Perceptions of a partner's motives for sacrifice were also associated with well-being and relationship quality. Implications for the conceptualization of relationship maintenance processes along these 2 dimensions are discussed. 相似文献
932.
Liederman J Frye R Fisher JM Greenwood K Alexander R 《Psychonomic bulletin & review》2005,12(2):380-386
Across three experiments, voice onset time discrimination along a /ba/-/pa/ continuum was found to be influenced by the order
of presentation of rapidly successive stimuli. Specifically, discrimination was disrupted when a relatively unambiguous /pa/
syllable was presented before, rather than after, a more ambiguous /pa/ or /ba/ syllable. In Experiments 1 and 2, for between-category
discrimination, this order effect was significant at interstimulus intervals (ISIs) below 250 msec, but not at 250 or 1,000
msec. In Experiments 2 and 3, the order effect was also significant for within-category discrimination at ISIs below 250 msec.
In addition, in Experiment 3 this order effect was not diminished by provision of performance feedback across eight testing
sessions. These findings reveal a particular vulnerability of phonological processing in response to rapidly successive stimuli
and may have implications for mathematical and neural models of speech processing of normal and impaired populations. 相似文献
933.
LaGasse LL Neal AR Lester BM 《Mental retardation and developmental disabilities research reviews》2005,11(1):83-93
Infant crying signals distress to potential caretakers who can alleviate the aversive conditions that gave rise to the cry. The cry signal results from coordination among several brain regions that control respiration and vocal cord vibration from which the cry sounds are produced. Previous work has shown a relationship between acoustic characteristics of the cry and diagnoses related to neurological damage, SIDS, prematurity, medical conditions, and substance exposure during pregnancy. Thus, assessment of infant cry provides a window into the neurological and medical status of the infant. Assessment of infant cry is brief and noninvasive and requires recording equipment and a standardized stimulus to elicit a pain cry. The typical protocol involves 30 seconds of crying from a single application of the stimulus. The recorded cry is submitted to an automated computer analysis system that digitizes the cry and either presents a digital spectrogram of the cry or calculates measures of cry characteristics. The most common interpretation of cry measures is based on deviations from typical cry characteristics. Another approach evaluates the pattern across cry characteristics suggesting arousal or under-arousal or difficult temperament. Infants with abnormal cries should be referred for a full neurological evaluation. The second function of crying--to elicit caretaking--involves parent perception of the infant's needs. Typically, parents are sensitive to deviations in cry characteristics, but their perception can be altered by factors in themselves (e.g., depression) or in the context (e.g., culture). The potential for cry assessment is largely untapped. Infant crying and parental response is the first language of the new dyadic relationship. Deviations in the signal and/or misunderstanding the message can compromise infant care, parental effectiveness, and undermine the budding relationship. (c) 2005 Wiley-Liss, Inc. MRDD Research Reviews 2005;11:83-93. 相似文献
934.
Sandak R Mencl WE Frost SJ Rueckl JG Katz L Moore DL Mason SA Fulbright RK Constable RT Pugh KR 《Cognitive, affective & behavioral neuroscience》2004,4(1):67-88
fMRI was used to investigate the separate influences of orthographic, phonological, and semantic processing on the ability
to learn new words and the cortical circuitry recruited to subsequently read those words. In a behavioral session, subjects
acquired familiarity for three sets of pseudowords, attending to orthographic, phonological, or (learned) semantic features.
Transfer effects were measured in an event-related fMRI session as the subjects named trained pseudowords, untrained pseudowords,
and real words. Behaviorally, phonological and semantic training resulted in better learning than did orthographic training.
Neurobiologically, orthographic training did not modulate activation in the main reading regions. Phonological and semantic
training yielded equivalent behavioral facilitation but distinct functional activation patterns, suggesting that the learning
resulting from these two training conditions was driven by different underlying processes. The findings indicate that the
putative ventral visual word form area is sensitive to the phonological structure of words, with phonologically analytic processing
contributing to the specialization of this region. 相似文献
935.
Posttraumatic stress and depressive symptoms in a college population one year after the September 11 attacks: the effect of proximity 总被引:5,自引:0,他引:5
As a follow-up to our earlier report [Behav. Res. Ther., in press] on the level of posttraumatic stress symptoms (PTSS), depressive symptoms, and frequency of diagnoses of probable posttraumatic stress disorder (PTSD) among college students at three public universities (Albany, NY, Augusta, GA, and Fargo, ND) resulting from the September 11, 2001. Terrorist attacks, we surveyed comparable groups of students (total, n = 1313) from these three institutions in the weeks following the first anniversary (2002) of the attacks. We found proximity effects (Albany higher than Augusta which was higher than Fargo) for PTSS and depressive symptoms but not for frequency of diagnoses of probable PTSD. Within the Albany site data, proximity of county of residence to New York City (NYC) also showed a proximity effect on PTSS. Although depressive symptoms were significantly different in 2002 versus 2001, the arithmetic differences in PTSS or in frequency of diagnoses of probable PTSD were not significant. The September 11 attacks continued to exert a psychic toll on college students even a year later. 相似文献
936.
Dube WV Macdonald RP Mansfield RC Holcomb WL Ahearn WH 《The Behavior analyst / MABA》2004,27(2):197-207
Joint attention (JA) initiation is defined in cognitive-developmental psychology as a child's actions that verify or produce simultaneous attending by that child and an adult to some object or event in the environment so that both may experience the object or event together. This paper presents a contingency analysis of gaze shift in JA initiation. The analysis describes reinforcer-establishing and evocative effects of antecedent objects or events, discriminative and conditioned reinforcing functions of stimuli generated by adult behavior, and socially mediated reinforcers that may maintain JA behavior. A functional analysis of JA may describe multiple operant classes. The paper concludes with a discussion of JA deficits in children with autism spectrum disorders and suggestions for research and treatment. 相似文献
937.
The effects of emotional connotation on emotional Stroop interference in anxiety were examined. First, a classical conditioning paradigm was used in which neutral words and nonwords were paired with either negative or neutral pictures. These conditioned stimuli were then presented in an emotional Stroop paradigm. Finally, participants rated each word and nonword for emotional connotation. The high-anxious group demonstrated significant interference for the nonwords that had been negatively conditioned, and these effects did not dissipate over time. The affective rating data supported the view that nonwords, but not the words had been successfully conditioned in the high-anxious group. This experiment provides evidence for the importance of emotional connotation rather than confounded semantic factors in the emotional Stroop effect. 相似文献
938.
This study examined whether African American children's perceptions of occupational status and their own vocational interests are affected by racial segregation of the workforce. Children (N = 92) rated familiar occupations with respect to status, desirability, and stereotyping. Children also rated novel jobs that had been depicted with African Americans, European Americans, or both African and European Americans. As predicted, for familiar jobs, children's judgments were linked to their knowledge of racial segregation of these jobs. In addition, novel occupations that had been depicted with African Americans were judged as lower in status than the identical occupations that had been depicted with European Americans, demonstrating a causal influence of workers' race on children's judgments. Children's age and socioeconomic background moderated their occupational judgments. 相似文献
939.
Ditto PH Munro GD Apanovitch AM Scepansky JA Lockhart LK 《Personality & social psychology bulletin》2003,29(9):1120-1132
The quantity of processing view of motivated reasoning predicts that individuals are more likely to spontaneously question the validity of unfavorable than favorable feedback even when the objective likelihood of the feedback is equivalent. Participants were videotaped self-administering a bogus medical test revealing either a favorable or an unfavorable result. In Studies 1 and 2, unfavorable result participants required more time to accept the validity of the test result and were more likely to spontaneously recheck its validity than were favorable result participants. However, unfavorable results also were perceived as less expected than were favorable results, even though the information supplied about their objective likelihood was identical. Study 3 showed that participants evaluating another student's results perceived favorable and unfavorable outcomes as equally likely, suggesting that the subjective likelihood of positive and negative feedback is also subject to motivational influence. 相似文献
940.
The Frontal Systems Behavior Scale (FrSBe), formerly called the Frontal Lobe Personality Scale (FLOPS), is a brief behavior rating scale with demonstrated validity for the assessment of behavior disturbances associated with damage to the frontal-subcortical brain circuits. The authors report an exploratory principal factor analysis of the FrSBe-Family Version in a sample including 324 neurological patients and research participants, of which about 63% were diagnosed with neurodegenerative diseases (Huntington's, Parkinson's, and Alzheimer's diseases). The three-factor solution accounted for a modest level of variance (41%) and confirmed a factor structure consistent with the three subscales proposed on the theoretical basis of the frontal systems. Most items (83%)from the FrSBe subscales of Apathy, Disinhibition, and Executive Dysfunction loaded saliently on three corresponding factors. The FrSBe factor structure supports its utility for assessing both the severity of the three frontal syndromes in aggregate and separately. 相似文献