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41.
This study investigates the relationship between oral proficiency and reading proficiency in English-learning children (L2 students) and native English-speaking children (NE students). A set of oral activities measuring students’ academic oral skills in science classes was developed and administered to 61 fourth graders. Both the meaning-related aspects and the formal aspects of the students’ academic oral proficiency were compared between strong and struggling readers and between NE and L2 students. The study thus used a 2 × 2 factorial design (Strong/Struggling Readers × NE/L2 Students). After controlling for the students’ nonverbal analytic and reasoning skills, this study found that strong and struggling readers showed different levels of performance with respect to the meaning-related aspects of oral academic language but not with respect to the formal aspects of language. Conversely, differences between NE and L2 students were found in components related to the formal aspects but not in those related to the meaning aspects of oral language.  相似文献   
42.
Using the Dimensions of Personal Identity Model proposed by Arredondo and Glauner (as cited in Arredondo et al., 1996 ), the authors reviewed the last 11 years of the Association for Spiritual, Ethical, and Religious Values in Counseling's journal, Counseling and Values, specifically regarding the “A” dimensions of race and ethnicity. Twenty‐five of the 235 articles reviewed (11%) contained a multicultural perspective defined in these terms. Other aspects of cultural inclusion, such as authorship and type of study, were also considered.  相似文献   
43.
Pitch is derived by the auditory system through complex spectrotemporal processing. Pitch extraction is thought to depend on both spectral cues arising from lower harmonics that are resolved by cochlear filters in the inner ear, and on temporal cues arising from the pattern of action potentials contained in the cochlear output. Adults are capable of extracting pitch in the absence of robust spectral cues, taking advantage of the temporal cues that remain. However, recent behavioral evidence suggests that infants have difficulty discriminating between stimuli with different pitches when resolvable spectral cues are absent. In the current experiments, we used the mismatch negativity (MMN) component of the event related potential derived from electroencephalographic (EEG) recordings to examine a cortical representation of pitch discrimination for iterated rippled noise (IRN) stimuli in 4- and 8-month-old infants. IRN stimuli are pitch-evoking sounds generated by repeatedly adding a segment of white noise to itself at a constant delay. We created IRN stimuli (delays of 5 and 6 ms creating pitch percepts of 200 and 167 Hz) and high-pass filtered them to remove all resolvable spectral pitch cues. In experiment 1, we did not find EEG evidence that infants could detect the change in the pitch of these IRN stimuli. However, in Experiment 2, after a brief period of pitch-priming during which we added a sine wave component to the IRN stimulus at its perceived pitch, infants did show significant MMN in response to pitch changes in the IRN stimuli with sine waves removed. This suggests that (1) infants can use temporal cues to process pitch, although such processing is not mature and (2) that a short amount of pitch-priming experience can alter pitch representations in auditory cortex during infancy.  相似文献   
44.
Butler, Caron, & Brooks (2000) tested the gaze following of 14-and 18-month-olds under 3 conditions: (1) when the adult's view of the targets was blocked by barriers, (2) when the barriers contained open windows, and (3) no barriers. Contrary to a nonmentalist "ecological" model (adult turns serve as cues to the location of interesting events), frequency of gaze following by 14-month-olds was not equivalent across the 3 conditions. Contrary to a mentalist model (infant wants to see what the adult is seeing), gaze following was not substantially less in the barrier than in the window and no-barrier conditions (as was the case for 18-month-olds). To examine whether the barriers posed vector projection problems for essentially nonmentalist, or line-of-sight problems for essentially mentalist younger infants, 3 experiments were conducted. In Experiment 1, a 12-month group was tested in the same 3 conditions to determine if, being younger, they might yield a more clearcut nonmentalist pattern. Contrarily, they behaved like Butler et al.'s 14-month-olds. In Experiment 2, a 14-month group was tested in the barrier and window conditions, but now combining pointing with turning. Infants behaved as predicted by the mentalist model: strong responding in the window condition and minimal in the barrier (where many strained to look inside the partitions). In Experiment 3, an attempt was made to differentiate between mentalist and "geometric" (vector projection) interpretations of the results of Experiment 2 by testing another 14-month group with the adult's eyes closed while pointing. Gaze following now dropped precipitously in the window condition as did looking inside the solid barriers, indicating (1) that infants in Experiment 2 had not simply been guided to target by an extended arm, but construed it as part of a referential act that was as much visual as gestural, and (2) that by 14 months, infants may have acquired a mentalistic concept of seeing.  相似文献   
45.
The “two-envelops” problem has stimulated much discussion on probabilistic reasoning, but relatively little experimentation. The problem specifies two identical envelopes, one of which contains twice as much money as the other. You are given one of the envelopes and the option of keeping it or trading for the other envelope. Variables of interest include the possible amounts of money involved, what is known about the process by which the amounts of money were assigned to the envelopes, and whether you are allowed to know how much money is in the envelope in hand before deciding whether to keep or trade. In an earlier study, Butler and Nickerson found that when participants were allowed to know how much was in the envelope in hand, they generally elected to trade if that amount was small relative to the range of possibilities and to keep otherwise. The present experiments showed that this propensity was independent of the amount of money in the envelopes. Participants made decisions with a strong bias for avoiding the risk of losing by trading, particularly when the amount in hand was known and large relative to the range of possible amounts, regardless of the absolute value of the gamble. The results illustrate the dependence of thinking on the context in which it occurs, and demonstrate a tendency to treat quantities that are large or small relative to a particular context in which they are encountered as though they were large or small in a more general sense.  相似文献   
46.
The “exchange paradox”—also referred to in the literature by a variety of other names, notably the “two-envelopes problem”—is notoriously difficult, and experts are not all agreed as to its resolution. Some of the various expressions of the problem are open to more than one interpretation; some are stated in such a way that assumptions are required in order to fill in missing information that is essential to any resolution. In three experiments several versions of the problem were used, in each of which the information given was sufficient to determine an optimal choice strategy when it exists or to justify indifference regarding keeping or trading when such a strategy does not exist. College students who were presented with the various versions of the problem tended to base their choices on simple heuristics and to give little evidence of understanding the probabilistic implications of the differences in the problem statements.  相似文献   
47.
Dyadic designs have been used in health research to investigate intra‐ and inter‐personal mechanisms of health and well‐being in various types of dyads, including parent–child dyads, siblings, friends, and romantic partners. Although a growing number of researchers are designing studies that capture the interdependent complexities of relationships, many still need more information on how to analyze the data in a way that maximizes its value. Therefore, the purpose of this review paper is twofold: (1) to address some of the ways in which dyadic data analysis is being used in current health research, with an emphasis on research that has employed the Actor‐Partner Interdependence Model, and (2) to propose and explain various methodological and substantive considerations that researchers should consider when using dyadic data analysis in their own research.  相似文献   
48.
Judea Pearl is Professor Emeritus of Computer Science and Statistics and Director of the Cognitive Systems Laboratory at University of California, Los Angeles. He has authored the books Heuristics (1984) and Probabilistic Reasoning in Intelligent Systems (1988). He has also published close to 300 articles on automated reasoning, learning, and inference. In 1999, he was awarded the IJCAI Research Excellence Award in Artificial Intelligence fundamental work in heuristic search, reasoning under uncertainty, and causality.Susan F. Butler is a doctoral student at Tufts University. Her work is in modeling of judgment and decision making, stochastic processes, and the examination of choice behavior under uncertainty.  相似文献   
49.
This study is a laboratory analogue investigation of variables that impinge upon the recall of detail about a simulated act of armed robbery among “eyewitnesses.” Specifically, this study sought to determine (1) whether recall of detail by Ss who watch the videotape of a simulated “armed robbery” taken by surveillance camera in a “convenience” store varies according to (a) the dress and appearance of the presumed “robber,” (b) the gender of the victim of the “robbery,” and/or (c) the gender of the “eyewitness”; and (2) whether such recall varies according to S’s inventoried psychological “needs.” Ss viewed the videotape of the simulated robbery under one of four conditions representing variations in the dress and appearance (“status”) of the alleged offender and the gender of the alleged victim; completed the Personality Adjective Inventory; and responded to a questionnaire concerning details of the alleged offense. Results indicate that the single statistically significant source of variance in accuracy of recall of detail is the experimentally manipulated “status” of the perpetrator; gender of victim and of subject contribute significantly neither in isolation nor in interaction. Inventoried psychological needs for “autonomy” and “change” are significantly but negatively and weakly correlated with accuracy among women Ss, while “change” alone is so correlated among men Ss. Findings are interpreted in accordance with theory and research in experimental social psychology and psychological criminology bearing upon person perception and role expectancy in relation to behavioral stereotypes. This study was supported in part through the Henry Rutgers Scholars Program at Rutgers College of Rutgers-The State University of New Jersey. The authors express their gratitude to Charles Rouse, Steven Gaynor, April Hayes, Erica Gross, Shawn Kimble, Elizabeth Chen, and Stephanie Bonn; Officer Leroy Washington, Rutgers University Police; and most particularly to Dipak Munsaf, proprietor of Krauszer's Food Store in the sixth ward of the city of New Brunswick.  相似文献   
50.
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