全文获取类型
收费全文 | 51589篇 |
免费 | 2142篇 |
国内免费 | 30篇 |
专业分类
53761篇 |
出版年
2020年 | 624篇 |
2019年 | 746篇 |
2018年 | 1033篇 |
2017年 | 1085篇 |
2016年 | 1113篇 |
2015年 | 805篇 |
2014年 | 957篇 |
2013年 | 4072篇 |
2012年 | 1741篇 |
2011年 | 1794篇 |
2010年 | 1119篇 |
2009年 | 1062篇 |
2008年 | 1516篇 |
2007年 | 1526篇 |
2006年 | 1343篇 |
2005年 | 1175篇 |
2004年 | 1127篇 |
2003年 | 1059篇 |
2002年 | 1069篇 |
2001年 | 1700篇 |
2000年 | 1662篇 |
1999年 | 1232篇 |
1998年 | 532篇 |
1997年 | 516篇 |
1996年 | 454篇 |
1995年 | 461篇 |
1993年 | 455篇 |
1992年 | 1014篇 |
1991年 | 898篇 |
1990年 | 985篇 |
1989年 | 864篇 |
1988年 | 894篇 |
1987年 | 828篇 |
1986年 | 869篇 |
1985年 | 787篇 |
1984年 | 697篇 |
1983年 | 647篇 |
1982年 | 454篇 |
1979年 | 713篇 |
1978年 | 534篇 |
1975年 | 608篇 |
1974年 | 699篇 |
1973年 | 683篇 |
1972年 | 574篇 |
1971年 | 525篇 |
1970年 | 479篇 |
1969年 | 577篇 |
1968年 | 648篇 |
1967年 | 569篇 |
1966年 | 511篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
831.
MARY K. O'FARRELL CLARA E. HILL SUSAN M. PATTON 《Journal of counseling and development : JCD》1986,65(3):141-145
Process analyses revealed that interpretations and exploration of feelings were helpful across two cases. Other interventions were helpful for one case but not the other. 相似文献
832.
Numerous previous studies have shown that partial-interval sampling in direct observation systematically overestimates duration and underestimates frequency. Whole-interval sampling systematically underestimates both duration and frequency. This paper presents a post hoc method through which the systematic errors in duration estimates in partial-interval sampling and whole-interval sampling can be minimized. 相似文献
833.
Patricia B. Sutker Daniel K. Winstead Kenneth C. Goist Robert M. Malow Albert N. Allain Jr. 《Journal of psychopathology and behavioral assessment》1986,8(2):89-101
Psychopathology and symptom patterns were studied in 60 former prisoners-of-war (POWs) by administering standardized tests including the Minnesota Multiphasic Personality Inventory (MMPI), an adjustment problem checklist, and a structured clinical interview. Most POWs showed marked psychological impairment, but modal profile analysis identified two prototypic MMPI patterns, which differed in pervasiveness and type of psychopathology. Profile subtypes were defined by unique clusters of clinical symptoms and differed in confinement stress severity. The typology of symptoms argues against a homogeneous conceptualization of stress-induced disorders and suggests the need for definition of the severity and subtype of stress phenomena and individual difference factors in responding to trauma. 相似文献
834.
835.
Dating experiences, especially the type or stage of dating, have consistently been found to be related to premarital sexual behavior. Findings regarding the age at 1st date and sexual behavior have been less consistent. This paper examined the age at which dating began and the type of dating relationship as correlates of premarital sexual attitudes and behavior among mid-teen adolescents. The analyses were based on a sample of high school students (n=836), most of whom were between the ages of 15 and 18 when the surveys were conducted. Early dating, especially early steady dating, was related to permissive attitudes and to premarital sexual experience among both males and females. The relationship between early dating and intercourse experience was particulary strong among Mormons, a religious group which has institutionalized age 16 as the legitimate age to begin dating. 相似文献
836.
Literature on the counseling needs of special populations typically has focused on the inadequate treatment those populations receive. Counselor education programs have responded by developing courses that target specific populations such as women, minorities, or disabled people. There are serious drawbacks, however, to this proliferation of specialized courses. In this article the authors discuss those drawbacks and argue that counselor education programs should include an integrated course that facilitates student self-awareness in conjunction with practical experience with a variety of clients. 相似文献
837.
J K O'Hanlon B D Sachs 《Journal of comparative psychology (Washington, D.C. : 1983)》1986,100(2):178-187
Three experiments with rats (Rattus norvegicus) were conducted to examine the roles of the male's penile spines and penile cups (flaring of the distal glans) in the induction of luteal activity in the female, and in the removal of copulatory plugs from the vaginal tract. The results of Experiment 1 revealed no role for the cup in luteal induction but did suggest that elements of the ejaculatory reflex apart from cup formation contribute to the elicitation of this neuroendocrine response. The origin of this stimulatory effect was not directly determined, but indirect evidence suggested a role for penile spines. In Experiments 2 and 3, features of the glans penis that might help effect plug removal were investigated, and the experiments demonstrated that penile spines, perhaps in conjunction with penile cups, contribute to the extraction of plugs from the vagina. 相似文献
838.
839.
Factors affecting spontaneous alternation behavior (SAB) in animals, for example, age, gender and species studied; type of
apparatus and cues employed; and neuro-anatomical, neuro-chemical and motivational status of the organism, were reviewed.
Despite a myriad of experiments showing interesting main effects of such variables, little research has been performed assessing
the interactive affects of these factors on alternation behavior. For example, psychologists test rats in central nervous
system (CNS) lesion studies, whereas psychopharmacologists tend to assess SAB in mice. Most importantly, studies have not
been reported investigating the possible interactions among species, brain lesions and drugs. This is an unfortunate omission
since several important alternation models include propositions relating to cholinergic and/or serotonergic coding in the
hippocampus. Examination of behavioral studies revealed the primary cue for alternation among invertebrates to be body turn,
whereas vertebrates rely primarily on directional and odor cues. Reference to the seeking of stimulus change remains the most
compelling motivational account of why animals manifest this ubiquitious and reliable behavior pattern.
This review and the unpublished studies were supported by Research Grants MH16962, MH21288, and MH36491 from the National
Institute of Mental Health and the Wake Forest University Research and Publication Fund. 相似文献
840.
This article is based on a review of recent literature on “computing stress”; that is, on the psychological stress effects
of working with computer systems. Current research into the sources of computer-related stress has tended to concentrate on
those employees who operate Visual Display Units (VDUs), either on a full-time professional basis as word-processor (WP) operators,
data-entry clerks, secretaries, or those dealing with enquiries from the public; or employees who use the VDU irregularly
as part of their other duties. A few studies have looked at specific occupation groups, such as printers (Kalimo & Lepp?nen,
1985), information technology professionals (programers and analysts), process workers, and college students (Sproull, Kiesler,
& Zubrow, 1984). Generally, however, research has been carried out on office workers, more often women, carrying out administrative
tasks. An attempt is made to identify those potential work-related stressors that have been isolated by these studies, and
also included are criticisms of the general methodologies used in many of them.
The terms “visual display unit,” “visual display terminal,” VDU, VDT, and “terminal” are used interchangeably. 相似文献