全文获取类型
收费全文 | 2045篇 |
免费 | 117篇 |
出版年
2023年 | 13篇 |
2022年 | 18篇 |
2021年 | 22篇 |
2020年 | 48篇 |
2019年 | 61篇 |
2018年 | 88篇 |
2017年 | 91篇 |
2016年 | 74篇 |
2015年 | 44篇 |
2014年 | 72篇 |
2013年 | 199篇 |
2012年 | 102篇 |
2011年 | 98篇 |
2010年 | 55篇 |
2009年 | 62篇 |
2008年 | 80篇 |
2007年 | 91篇 |
2006年 | 61篇 |
2005年 | 55篇 |
2004年 | 58篇 |
2003年 | 66篇 |
2002年 | 78篇 |
2001年 | 43篇 |
2000年 | 36篇 |
1999年 | 35篇 |
1998年 | 33篇 |
1997年 | 22篇 |
1996年 | 25篇 |
1995年 | 19篇 |
1994年 | 29篇 |
1993年 | 16篇 |
1992年 | 28篇 |
1991年 | 17篇 |
1990年 | 22篇 |
1989年 | 16篇 |
1988年 | 17篇 |
1987年 | 17篇 |
1986年 | 17篇 |
1985年 | 10篇 |
1984年 | 22篇 |
1983年 | 10篇 |
1982年 | 11篇 |
1981年 | 10篇 |
1980年 | 14篇 |
1979年 | 15篇 |
1978年 | 22篇 |
1976年 | 20篇 |
1974年 | 12篇 |
1969年 | 9篇 |
1966年 | 11篇 |
排序方式: 共有2162条查询结果,搜索用时 0 毫秒
51.
D. M. Parker 《Attention, perception & psychophysics》1980,28(4):365-368
Response latencies to the onset, offset, and contrast reversal of sinusoidal gratings over a range of spatial frequencies were measured. For gratings of constant physical contrast, RT was monotonically related to spatial frequency regardless of presentation mode. Comparison of RTs to 1.0- and 9.0-cycle/deg gratings adjusted to equal apparent contrast showed that the RT shifts cannot be directly attributed to contrast sensitivity differences. It is concluded that spatial-frequency-dependent processing delays occur regardless of which temporal property of the stimulus the subject must respond to. 相似文献
52.
This paper presents an empirical study of sex differences and sex-role stereotyping in clinical psychologists' reports. The results of numerous analyses showed no significant evidence at any point of sex differences or sex-role stereotyping in the form or the subject matter of the clinical reports.
相似文献53.
Cerebral laterality was examined for third-, fourth-, and fifth-grade deaf and hearing subjects. The experimental task involved the processing of word and picture stimuli presented singly to the right and left visual hemifields. The analyses indicated the deaf children were faster than the hearing children in overall processing efficiency, and that they performed differently in regard to hemispheric lateralization. The deaf children processed the stimuli more efficiently in the right hemisphere, while the hearing children demonstrated a left-hemisphere proficiency. This finding is discussed in terms of the hypothesis that cerebral lateralization is influenced by auditory processing. 相似文献
54.
55.
Parker BK Serdikoff SL Kaminski BJ Critchfield TS 《Journal of the experimental analysis of behavior》1991,55(3):275-286
Two experiments were conducted using an autoshaping procedure with pigeons to examine whether dimensional stimulus control by a Pavlovian facilitator parallels the control established following operant discrimination training. Facilitation training consisted of the presentation of a black vertical line on a white background as the B stimulus in a feature-positive discrimination in which the A stimulus (white keylight) was followed by grain presentation only if preceded by B. In this way, B facilitates or sets the occasion for pecking at A. Subsequent testing for generalization along the line-orientation dimension produced decremental gradients when the facilitation paradigm incorporated an explicit feature-negative stimulus (B−). These results parallel the decremental control obtained following operant discrimination training and suggest that Pavlovian facilitators and instrumental discriminative stimuli are functionally equivalent. 相似文献
56.
The purposes of this study were to (1) describe errors in weightbearing at three target levels for patients with neuropathic feet and control subjects, (2) compare the absolute errors at the three target levels between groups, and (3) identify predictor variables of errors in weightbearing by the neuropathic group. The groups of 26 subjects were matched for age and height. Weightbearing was measured with digital scales while subjects attempted to adjust their weight through a designated lower extremity to each target level (25, 50, and 75% of body weight). Analysis of variance indicated no significant difference in the percentage weightbearing between groups at the three target levels. There was a significant difference in errors made in weightbearing by the groups at the three target levels. Mean errors ranged from 8.5 to 9.7% for the neuropathic group and from 2.4 to 6.6% for the control group. The findings cast doubt on the utility (in the absence of feedback) of requesting individuals, particularly those with neuropathic feet, to weightbear at specific target levels. 相似文献
57.
Five instruments, the Differential Test of Conduct and Emotional Problems, Louisville Behavior Checklist, Personality Inventory for Children, 16 PF Test, and Tennessee Self-concept Scale, were given to differentiate between 50 conduct problem and 48 emotionally disturbed students assigned in public school to secondary level classes for the severely emotionally handicapped. Discriminant analysis of each test's rate of classification germane to both a pre-assessment categorization as conduct problem vs emotionally disturbed and a post-assessment classification as no problem vs conduct problem vs emotionally disturbed vs combined problem is presented. The analysis indicated that the Differential Test of Conduct and Emotional Problems, Louisville Behavior Checklist, and Personality Inventory for Children can, with variable effectiveness, significantly classify adolescents into groups using such pre- and post-assessment information. 相似文献
58.
59.
Peter A. Wyman Emory L. Cowen William C. Work Gayle R. Parker 《American journal of community psychology》1991,19(3):405-426
Reports findings from interviews with parents of demographically-comparable groups of highly-stressed urban children with stress-resilient (SR) and stress-affected (SA) outcomes at ages 10-12. SR and SA children were compared on family milieu and child development variables assessed within a developmental framework. Compared to SAs, parents of SRs scored higher on variables reflecting parent perceptions of a nurturant caregiver-child relationship and self-views as effective caregivers, in the context of positive discipline practices, a child's positive early temperament, and support for primary caregivers. A discriminant function analysis identified seven variables that optimally differentiated the groups and correctly classified 86% of the Ss as SR or SA. 相似文献
60.
Joan B. Kelly 《Behavioral sciences & the law》1991,9(4):387-398
The interactions and perceptions of two groups of divorcing parents using different dispute resolution processes were compared at final divorce and at 1 and 2 years post-divorce. Using objective and standardized measures, the effectiveness of a comprehensive divorce mediation process was contrasted to the more customary two attorney adversarial process. The 153 parents at final divorce were part of a larger, longitudinal study of 435 divorcing men and women who were followed from the beginning of divorce to 2 years post-divorce. Parents in the divorce mediation group reported less conflict during the divorcing period, and less conflict, more contact and communication, and a more positive attitude toward the other parent at final divorce, results which remained significant after controlling for several baseline group differences. The majority of differences favoring the mediation intervention continued through the first year after divorce, and disappeared by the 2 year post-divorce data collection. The nature of the mediation process is discussed in relation to these parental behaviors and attitudes. 相似文献