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951.
Long DL Wilson J Hurley R Prat CS 《Journal of experimental psychology. Learning, memory, and cognition》2006,32(4):816-827
Readers construct at least 2 interrelated mental representations when they comprehend a text: a textbase and a situation model. Two experiments were conducted with recognition memory to examine how domain knowledge and text coherence influence readers' textbase and situation-model representations. In Experiment 1, participants made remember-know judgments to text ideas. Knowledge and coherence interacted to influence remember judgments differently than know judgments. In Experiment 2, the authors used the process-dissociation procedure to obtain recollection and familiarity estimates. Knowledge and coherence interacted to influence recollection estimates but not familiarity estimates. The authors claim that recollection and familiarity can be used as markers of the different processes involved in constructing a textbase and a situation model. 相似文献
952.
Androgens are hypothesized to enhance aspects of mnemonic processing. However, it is unclear whether the memory improvement is associated with changes in earlier aspects of information processing, such as attention. The present experiments examined the effects of gonadectomy or supplementation with testosterone or dihydrotestosterone on performance of male rats in a two-lever attention task that required discrimination of visual signals and non-signals. In Experiment 1, Long-Evans rats were trained in the attention task and then underwent gonadectomy or sham-surgery. Postsurgically, animals were tested for 20 sessions in the attention task and then received manipulations designed to increase attentional demands. Gonadectomized and sham-treated animals performed similarly during immediate postsurgical testing and across all manipulations. Finally, the effects of administering the muscarinic receptor antagonist scopolamine (0, 0.1, and 0.2 mg/kg) on attentional performance were assessed for all animals. Scopolamine decreased accuracy of signal detection but did not differentially affect gonadectomized and sham-treated animals. In Experiment 2, a new group of rats (not gonadectomized) was trained to perform the attention task and subsequently administered testosterone (0, 0.1, and 0.5 mg/kg) or dihydrotestosterone (0, 0.1, and 0.5mg/kg) prior to performing the standard version of the attention task and in the presence of a visual distractor. Testosterone (0.5 mg/kg) decreased accuracy on non-signal trials and, at 0.1 mg/kg, decreased latencies to retrieve a reward. Dihydrotestosterone (0.5 mg/kg) decreased accuracy on non-signal trials during visual distractor sessions. The present data do not support the hypothesis that alterations in attention critically mediate androgen-induced changes in mnemonic processing. Supra-physiological androgen levels appear to be capable of impairing attentional processing. 相似文献
953.
According to the WAIS-III Administration and Scoring Manual, Object Assembly (OA) may be substituted for any spoiled Performance subtest. This assertion has not been evaluated in a clinical sample. The present investigation reports differences that resulted in Performance IQ (PIQ) and Full Scale IQ (FSIQ) when OA replaced each of the Performance subtests. Participants were 47 referrals for neuropsychological assessment (age M = 45.98 years, SD = 9.82; education M = 13.82 years, SD = 2.78). Results indicated that OA may replace any Performance subtest without seriously altering the summary scores. Differences between the standard IQs and OA-based composites were < 2 points for PIQ and < 1 point for FSIQ. More than 90% of the OA-based composites fell within the 90% confidence limits of the corresponding IQ. 相似文献
954.
955.
Bialystok E Craik FI Ruocco AC 《Quarterly journal of experimental psychology (2006)》2006,59(11):1968-1983
Two experiments are reported in which monolingual and bilingual participants who were younger (Experiment 1) or older (Experiment 2) adults performed in a dual-task classification paradigm. Visually (primary task) and auditorily (secondary task) presented stimuli were classified into two categories. The stimuli belonged to two domains, letters or numbers (LN) and animals or musical instruments (AM), and the two task modalities used stimuli from the same (related) or opposite (unrelated) domains. For both age groups, bilinguals were less disrupted than monolinguals in visual sorting in the LN domain, and relatedness affected performance only in the AM domain. The results indicate different processing demands for the two domains, with the simpler domain (LN) favouring bilinguals and the more semantically complex domain (AM) favouring related judgements for the two task modalities. 相似文献
956.
Bernstein A Zvolensky MJ Stewart SH Nancy Comeau M Leen-Feldner EW 《Behaviour research and therapy》2006,44(5):679-698
The present investigation comparatively evaluated the latent class structure and parameters of anxiety sensitivity (AS) among female and male youth using the Childhood Anxiety Sensitivity Index. Participants were 4462 adolescents (2189 females) in grades 7-12 (M(age)=15.6 years). Consistent with prediction, taxometric analyses indicated the latent structure of AS was taxonic in both males and females, demonstrating the taxonic latent structure of AS is similarly observed across gender. Also consistent with prediction, the base rate of the AS taxon differed between genders -- higher for females (12%) compared to males (7%). These findings are discussed in terms of their implications for the study of AS and panic vulnerability among youth. 相似文献
957.
Feldner MT Zvolensky MJ Stickle TR Bonn-Miller MO Leen-Feldner EW 《Behaviour research and therapy》2006,44(2):249-272
Anxiety-related responding to, and recovery from, a 5-min 10% carbon dioxide-enriched air presentation among 80 participants with no history of psychopathology was examined. Half of participants were instructed to suppress challenge-induced emotional responses, whereas their matched counterparts were instructed to observe such responses. Responding from immediately post-challenge through a 10-min recovery period was analyzed as a function of Anxiety Sensitivity-Physical Concerns and experimental condition using individual growth curve modeling. Anxiety Sensitivity-Physical Concerns moderated the effect of suppression only on emotion valence during recovery. In terms of main effects, suppression resulted in increased heart rate during recovery and Anxiety Sensitivity-Physical Concerns was positively associated with post-challenge self-reported anxiety. Results are discussed in terms of the potential role of inhibition-oriented affect regulation processes in the etiology of panic disorder. 相似文献
958.
959.
Perceived trustworthiness of knowledge sources: the moderating impact of relationship length 总被引:1,自引:0,他引:1
Prior meta-analytic evidence has indicated no association between relationship length and perceived trustworthiness. Viewing trustors as information processors, the authors propose a model in which relationship length, although having no direct effect on perceived trustworthiness, moderates the association between perceived trustworthiness and the basis on which people decide to trust each other. Specifically, as trustors learn about others, they base their trust on different kinds of information (demographic similarity, trustworthy behavior, and shared perspective). Hierarchical multiple regression analyses of a field survey of supervisors and subordinates from 3 companies (N = 88) provide evidence consistent with this prediction: Perceived trustworthiness is associated with demographic similarity in newer relationships, with trustworthy behavior in relationships that are neither brand new nor old but in-between, and with shared perspective in older relationships. 相似文献
960.
Purdy JE Dixon D Estrada A Peters A Riedlinger E Suarez R 《The Journal of general psychology》2006,133(2):131-152
The prawn-in-a-tube procedure (J. B. Messenger, 1973a) has been used almost exclusively to study associative learning in cuttlefish. In two experiments, the authors sought to determine whether the decline in attack responses observed in this procedure was best accounted for by habituation or associative learning. Results of Experiment 1 revealed an asymmetrical stimulus-specificity effect that could be interpreted as either an instance of habituation or of associative learning. Results of Experiment 2 demonstrated that the response decline could not be reversed following the presentation of a dishabituatory stimulus. The combined results of these experiments support the conclusion that the response decline is best viewed as a resulting of associative processes. The authors considered whether the response decline represents extinction or passive avoidance. 相似文献