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91.
34 participants judged the duration of a 4-sec. interval which was preceded by a contextual interval of 2, 6, 10, or 14 sec. Underestimations of the test interval when the contextual intervals were longer suggested temporal durations are affected by a mechanism of comparing and contrasting analogous to the one producing some visual illusions. 相似文献
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93.
Morris AL Harris CL 《Journal of experimental psychology. Human perception and performance》2004,30(5):913-922
Does repetition blindness represent a failure of perception or of memory? In Experiment 1, participants viewed rapid serial visual presentation (RSVP) sentences. When critical words (C1 and C2) were orthographically similar, C2 was frequently omitted from serial report; however, repetition priming for C2 on a postsentence lexical decision task was equivalent whether or not C1 was similar to C2. In Experiment 2, participants monitored RSVP sentences for a predetermined target. Participants frequently failed to detect the target when it was preceded by an orthographically similar word. In Experiment 3, the authors investigated the role of the attentional blink in this effect. These experiments suggest that repetition blindness is a failure of conscious perception, consistent with predictions of the token-individuation hypothesis. 相似文献
94.
Harris SM 《Journal of personality》2004,72(2):379-412
Associations among hardiness, health value, and health protective behaviors were examined as a function of ethnicity among 80 African American and 100 European American college students. The role of health value as moderator versus mediator in the hardiness-health behavior link was explored. Racial differences in correlations among hardiness, control, and commitment were found, with stronger relations for African American than European Americans. Moderate positive relations between hardiness, control, commitment, and health value for African American, as contrasted with weak relations between commitment and health value for European Americans, were also shown. A partial mediational effect for health value with personal distress and moderator effects for health value with personal distress and health habits were found for African American only. Race predicted hardiness variables, tobacco and alcohol use, personal distress, and health habits beyond what was accounted for by occupation and income. The ramifications of these data with regard to future studies on hardiness, health value, and health behaviors for African American are discussed. 相似文献
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This article details the development and preliminary validation of a multidimensional self-report measure of emotion for 8- to 12-year-old children--the How I Feel (HIF). Item generation and selection occurred via 2 pilot administrations (ns = 250 and 378, respectively). Ten experts provided data on content validity. Exploratory factor analysis and subsequent confirmatory factor analysis with samples of 406, 524, 349, and 349 3rd-through 6th-grade children supported a 3-factor model, including the frequency and intensity of (a) positive emotion, (b) negative emotion, and (c) positive and negative emotion control. Results showed moderate longitudinal stability for 120 children over 2 years. Concurrent validity was established. The HIF can be useful in understanding the interplay between arousal and control in social-emotional adjustment in school-age children. 相似文献
97.
When 2 similar words (e.g., react reach) are briefly sequentially displayed, the 2nd word may be omitted from the report, a phenomenon known as repetition blindness (RB). Previous researchers have suggested that consecutive letters are the unit affected by RB. Six experiments provided new data on orthographic RB. Two letters at the beginning or end of words resulted in RB, as did alternating interior letters (tactile earthly) and 3 letters with different relative positions (arid bird). However, no RB was found with a single final letter (show view). Observed RB may reflect pattern completion because RB for pairs like throat theory was reduced when the nonrepeated letters (eory) were consistent with only a single word. The experiments point to a model of orthographic RB in which both individual letters and letter sequences of length 2 or more play a role. 相似文献
98.
Common sense suggests that unique or abruptly changing (transient) elements in a visual scene often draw attention involuntarily. Visual search studies paint a seemingly different picture, however: Unique items usually draw attention involuntarily only when observers seek a unique target. One type of transient— abrupt onsets—draws attention involuntarily, but only when the observer is seeking an onset (Folk, Remington, & Johnston, 1992). One way of reconciling common-sense with these findings is to suppose that when people view a scene with no specific goal or task, they adopt adefault set, which might prioritize novelty and/or transients. In two experiments, 336 subjects saw a single display of six items for 900 msec, expecting to have to describe it (Experiment 1) or make an aesthetic judgment about it (Experiment 2). One item in the display was either uniquely flashing (surrounded by static items) or uniquely static (surrounded by flashing items). In both studies, the unique item, even if static, was more often reported than the nonunique item, with flashing items enjoying an additional advantage. 相似文献
99.
We compared the neuropsychological test performance of adult ADHD patients to the neurocognitive profiles of control subjects recruited from the general population. We administered a neuropsychological test battery consisting of measures considered sensitive to either orbitofrontal or dorsolateral-prefrontal (DLPF) dysfunction. Orbitofrontal hypoarousal is associated with behavioral disinhibition and a relative indifference to punishment. The DLPF region may function as a central executive system. Indeed, DLPF dysfunction may underlie many of the cardinal symptoms associated with ADHD. We tested the following hypotheses: (1) adult subjects meeting DSM-IV criteria for ADHD, predominantly hyperactive-impulsive type, would display neuropsychological deficits on tasks sensitive to orbitofrontal dysfunction; (2) adult subjects meeting DSM-IV criteria for ADHD, predominantly inattentive type, would perform poorly on measures sensitive to DLPF dysfunction; and (3) adult subjects meeting DSM-IV criteria for ADHD, combined type, would exhibit performance deficits on orbitofrontal measures and on DLPF tasks. Results partially confirmed our hypotheses. Subtyping ADHD patients revealed important group differences. Distinct neurocognitive and clinical profiles were observed. 相似文献
100.