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81.
Children can express thoughts in gesture that they do not express in speech--they produce gesture-speech mismatches. Moreover, children who produce mismatches on a given task are particularly ready to learn that task. Gesture, then, is a tool that researchers can use to predict who will profit from instruction. But is gesture also useful to adults who must decide how to instruct a particular child? We asked 8 adults to instruct 38 third- and fourth-grade children individually in a math problem. We found that the adults offered more variable instruction to children who produced mismatches than to children who produced no mismatches--more different types of instructional strategies and more instructions that contained two different strategies, one in speech and the other in gesture. The children thus appeared to be shaping their own learning environments just by moving their hands. Gesture not only reflects a child's understanding but can play a role in eliciting input that could shape that understanding. As such, it may be part of the mechanism of cognitive change.  相似文献   
82.
Longitudinal survivors of the Berlin Aging Study (N = 96, mean age = 84 years, range 75-101 years) were instructed and trained in a mnemonic skill to examine plasticity of episodic memory performance in very old age. Performance gains after mnemonic instruction were modest, and most individuals were unable to further enhance their performance during 4 sessions of mnemonic practice. Whereas the proportion of variance explained by measures from the broad fluid-ability domain (e.g., perceptual speed) increased with training, the proportion of variance explained by crystallized-ability domain (e.g., word knowledge) and sociobiographical variables decreased. Furthermore, prior 6-year longitudinal changes (loss) in perceptual speed predicted individual differences in plasticity. Results suggest that aging-induced biological factors are a prominent source of individual differences in cognitive plasticity in very old age.  相似文献   
83.
Both research and clinical work have revealed factors that can lead to the onset and persistence of panic disorder. Preoedipal conflicts intensify the danger of oedipal longings for panic patients. Competition with the same-sex parent is linked with angry preoedipal fantasies and associated fears of disruption in attachments. Fantasies or actual successes can thus trigger panic episodes. Regression to a helpless, dependent state such as panic defends against the danger of aggressive, competitive fantasies and actual achievements. However, the regressive state can also be experienced as dangerous, and can be linked with frightening homosexual fantasies. A reactive aggressive oedipal stance can sometimes result, triggering escalating turmoil. The panic episode serves a series of compromise formations in dealing with these conflicted wishes.  相似文献   
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Focuses on the excessive defensiveness and the psychodynamic factors that typify many exhibitionists. After reviewing some of the literature describing the marked guardedness of these offenders, a detailed discussion follows of the Rorschach protocol of an exhibitionist revealing his core emotional conflicts. These test results illustrate the value of the Rorschach in eiliciting material that in many cases would be difficult to obtain because of these patients' characteristically suspicious and defensive stance concerning their offense and their personal lives. The case demonstrates the significant role of psychological testing in the forensic process, particularly for defensive, less verbal, and unpsychologically-minded offenders.  相似文献   
86.
A 51-year-old right-handed male experienced reading difficulty and an upper right visual field cut after a head injury. The patient's letter naming was impaired and word naming was painstakingly slow. Words were decoded in a letter by letter sequence and performance varied directly with word length. Apart from his reading difficulties the patient was linguistically competent. He was sensitive to manipulations of word frequency and orthographic regularity. He wrote spontaneously and could identify the written counterpart to a spoken word with relative ease. Computerized axial tomography revealed damage to the posterior temporal-parietal region of the left hemisphere.  相似文献   
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Recent evidence indicates that in intermixed recognition testing of different stimulus classes, people can apply different decision criteria (a criterion shift) to stimulus classes distinguished by the study-test delay (Singer, Gagnon, & Richards, 2002), but not by a conspicuous strength manipulation (Stretch & Wixted, 1998b). In an attempt to reconcile these differences, we applied Singer et al.'s text retrieval method to word recognition. People first studied blocked items from each of five categories. After a delay, five new category lists were presented. After each one, the participants recognized intermixed targets and distractors from the current category and one of the earlier ones. At delays of up to 40 min, the answering criteria for immediate and delayed categories were indistinguishable. At delays of 2 days, in contrast, however, both yes-no and confidence-rating data indicated that more lenient criteria were applied to delayed than to immediate test items. This suggests that people can use the delay between study and test to flexibly adjust the decision criteria of word recognition.  相似文献   
90.
Four experiments investigated the effects of romantic goals on task and social impression formation. The clouded judgment hypothesis holds that romantic goals encourage positive biases on less relationship-relevant dimensions (e.g., task competence). The default positivity hypothesis holds that romantic goals encourage positivity biases on relationship-relevant dimensions in the absence of relevant information. The selective accuracy hypothesis posits that romantic goals encourage accuracy regarding relationship-relevant attributes (e.g., social competence) when relevant information is available. In four studies, male and female perceivers evaluated opposite-sex targets whom they expected to date (romantic goals) or to meet for nonromantic interaction (baseline). Videotaped targets displayed competence or incompetence on task (Experiments 1 and 2) or social (Experiments 3 and 4) dimensions. All three hypotheses were supported.  相似文献   
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