全文获取类型
收费全文 | 5767篇 |
免费 | 253篇 |
专业分类
6020篇 |
出版年
2023年 | 43篇 |
2022年 | 29篇 |
2021年 | 48篇 |
2020年 | 111篇 |
2019年 | 119篇 |
2018年 | 152篇 |
2017年 | 151篇 |
2016年 | 202篇 |
2015年 | 143篇 |
2014年 | 130篇 |
2013年 | 642篇 |
2012年 | 270篇 |
2011年 | 333篇 |
2010年 | 192篇 |
2009年 | 222篇 |
2008年 | 250篇 |
2007年 | 291篇 |
2006年 | 228篇 |
2005年 | 221篇 |
2004年 | 235篇 |
2003年 | 232篇 |
2002年 | 212篇 |
2001年 | 109篇 |
2000年 | 99篇 |
1999年 | 104篇 |
1998年 | 105篇 |
1997年 | 82篇 |
1996年 | 80篇 |
1995年 | 77篇 |
1994年 | 86篇 |
1993年 | 57篇 |
1992年 | 72篇 |
1991年 | 44篇 |
1990年 | 51篇 |
1989年 | 32篇 |
1988年 | 23篇 |
1987年 | 37篇 |
1986年 | 37篇 |
1985年 | 37篇 |
1984年 | 35篇 |
1983年 | 51篇 |
1982年 | 42篇 |
1981年 | 33篇 |
1980年 | 29篇 |
1979年 | 40篇 |
1978年 | 45篇 |
1977年 | 27篇 |
1976年 | 28篇 |
1973年 | 16篇 |
1972年 | 14篇 |
排序方式: 共有6020条查询结果,搜索用时 15 毫秒
171.
Self-selected paraprofessional trainees enrolled in a helping skills training program participated in a 6-minute pretraining helping interview from which their frequency of continuing responses was obtained. Continuing responses allow helpees to present their concerns in a nonthreatening, supportive environment and are important in the relationship establishing stage of the helping process. For data analysis purposes only, trainees were divided into three groups, a high, medium, and low group, based on the frequency of continuing responses made. Following training, at posttest, no significant differences were found among the three groups on the amount of continuing responses made during a second identical 6-minute interview. Implications for various selection procedures and training are discussed. 相似文献
172.
173.
Steven P. Warner Frank D. Miller Mark W. Cohen 《Journal of applied behavior analysis》1977,10(4):737-737
A variety of behavioral procedures have been employed in recent years to modify disruptive classroom behavior. Such methods have been developed with the belief that curtailing disruptive behavior would strengthen positive classroom performance. In this study, two procedures, the good behavior game and the teacher-attention method, were compared to determine short-run effectiveness. Four teachers (two fourth-grade and two fifth-grade) implemented both methods in their classrooms over a five-week period. Presentation of methods was alternated in a counterbalanced design to control for order effects. Each of the four classrooms consisted of 25 students. A time-sampling procedure was used to record the presence or absence of disruptive behavior within 15-second intervals. Disruptive behavior was defined as any talking-out or out-of-seat behavior without permission. The results indicated that both procedures were effective in modifying disruptive classroom behavior, but that the good behavior game reduced disruptive behavior significantly better than the teacher-attention method. In addition, all teachers preferred the game to the teacher-attention procedure. This reaction seemed related to the effort involved in initiating the two activities. The good behavior game required less effort on the teacher's part. However, use of the game alone raises certain ethical considerations. One such issue involves abuse of peer pressure. Also, there is a possibility that negative rules may tend to promote resentment. Positively stated rules would ameliorate that problem. Another relates to the possibility that some teachers might be carried away by the ease of the game's implementation to the extent that behavior control becomes the primary objective in the classroom. As a result, one might consider use of the game to maximize short-term change, but then phase out this procedure in favor of another method (e.g., teacher attention) for long-run effects. 相似文献
174.
In three studies the formulation was tested that characteristics of the observer have an effect on imitation only in situations which provide little information concerning appropriate or expected behaviors. In Experiment I, female college students of high, medium, and low need for social approval underwent either a high or low arousal manipulation. Subjects observed a videotaped model who engaged in a size judgment task. For half the subjects the model received verbal reward (high information); for the other half the model received no feedback (low information). Subsequently, the model and subject responded alternately in the task during which no feedback was given. Neither need for social approval nor manipulated arousal was found to be systematically related to imitation in either information condition. However, the hypothesized relationships were found when subjects' arousal or anxiety levels were determined by self ratings. These results were replicated in a second, similar experiment. In a third experiment, which involved an improved arousal manipulation, the hypothesized relationships were confirmed. 相似文献
175.
To offset shortcomings of existing demonstrations of right-ear superiority in the analysis of formant transitions, an experiment was performed on whispered speech. Two aspects of dichotic listening performance were examined in a single-report paradigm: the right-ear advantage (REA) for the perception of the voicing distinction and the feature sharing advantage (FSA) for both voicing and place features. A significant REA was obtained for the voicing distinction cued by first formant transition in the absence of a switch from aperiodic to periodic excitation. This, plus a greater incidence of voiced responses to right-ear stimuli, suggests that a distinction involving transitions can specifically augment the REA. The data also showed better identification of place and of voicing feature values when the competing dichotic speech stimuli shared these respective features (FSA) than when they did not. This FSA was restricted to the feature shared and hence not an effect of response uncertainty. The implications of these results for models of speech processing are discussed. 相似文献
176.
Mark L. Davison 《Psychometrika》1976,41(2):233-247
A quadratic programming algorithm is presented for fitting Carroll's weighted unfolding model for preferences to known multidimensional scale values. The algorithm can be applied directly to pairwise preferences; it permits nonnegativity constraints on subject weights; and it provides a means of testing various preference model hypotheses. While basically metric, it can be combined with Kruskal's monotone regression to fit ordinal data. Monte Carlo results show that (a) adequacy of true preference recovery depends on the number of data points and the amount of error, and (b) the proportion of data variance accounted for by the model sometimes only approximately reflects true recovery.This study is based on a doctoral dissertation submitted to the University of Illinois at Urbana-Champaign. The author wishes to thank the members of his dissertation committee—Lawrence E. Jones, Chairman, Charles Lewis, Stephen Golding, Ledyard Tucker, and Nancy Wiggins—for their helpful comments. 相似文献
177.
Paul J. Lavrakas John R. Buri Mark S. Mayzner 《Attention, perception & psychophysics》1976,20(6):475-481
The purpose of the present study is to provide a perspective on the recognition of other-race faces, i.e., black faces by white subjects. Past research has indicated that individuals have greater difficulty recognizing other-race faces than they do same-race faces. On the basis of previous findings, we chose to investigate the recognition of black faces by white subjects as a function of the quantity and quality of previous experience with blacks, racial attitudes, field dependence/independence, and recognition training. Forty-two white subjects participated in pre-, post-, and delayed recognition tests. Subject data were also collected to explore individual differences in recognition performance. Using multiple regression techniques, it was found that field dependence/independence accounted for the largest proportion of variance in recognition performances; a feature-discrimination training task and past experience with blacks were also found to significantly relate to recognition performance. The applied aspects of these results are discussed. 相似文献
178.
Calvin K. Adams Deborah C. Hall H. S. Pennypacker Mark Kane Goldstein Larry L. Hench Michael C. Madden Gerald H. Stein A. Charles Catania 《Attention, perception & psychophysics》1976,20(3):163-167
Sixteen observers palpated silicone models of human breasts containing lumps 1.6-12.1 mm in diameter. Detectability depended on the size of the lump, producing a systematic psychometric function. In eight observers who participated in three or more sessions, performance improved with practice, with most improvement occurring within one or two 26-trial sessions. Three-week retention measures disclosed no appreciable decrease in performance, but a significant correlation was found between the number of lumps detected and duration of trial (p < .01). There was no difference in performance between four observers who used their preferred hands and four observers who used their nonpreferred hands. These data establish that examination of breast models for the detection of lumps simulating cancer is a task amenable to experimental analysis. 相似文献
179.
Untreated rats were observed to either bite or box with Pentobarbital-treated opponents in a shockelicited aggression situation. Specific behaviors such as ataxia movements and submissive postures immediately preceded biting attacks, but rarely boxing whereas behaviors such as moving around the chamber and upright threat postures immediately preceded boxing attacks, but rarely biting. These data suggest that the topography of aggressive behavior of an attacking rat is determined by the behavior of the victim. 相似文献
180.
Fifteen hermaphroditic females with the adrenogenital syndrome received corrective, androgen-suppressing therapy with cortisone from birth onward. They were studied psychologically in late adolescence and adulthood, with particular attention to a possible long-term effect of fetal androgenization on aggressive manifestations. No such effect was evident. The girls were tomboyish in the manner previously reported for the adrenogenital syndrome. 相似文献