首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   770篇
  免费   34篇
  2023年   5篇
  2022年   6篇
  2021年   5篇
  2020年   13篇
  2019年   13篇
  2018年   25篇
  2017年   17篇
  2016年   13篇
  2015年   16篇
  2014年   18篇
  2013年   92篇
  2012年   23篇
  2011年   34篇
  2010年   19篇
  2009年   31篇
  2008年   34篇
  2007年   31篇
  2006年   34篇
  2005年   26篇
  2004年   17篇
  2003年   25篇
  2002年   24篇
  2001年   27篇
  2000年   14篇
  1999年   12篇
  1998年   21篇
  1997年   10篇
  1996年   9篇
  1994年   8篇
  1993年   6篇
  1992年   12篇
  1991年   13篇
  1990年   6篇
  1989年   9篇
  1987年   7篇
  1986年   5篇
  1985年   9篇
  1984年   6篇
  1983年   5篇
  1982年   10篇
  1981年   13篇
  1979年   6篇
  1978年   6篇
  1977年   4篇
  1976年   7篇
  1975年   13篇
  1973年   6篇
  1972年   5篇
  1968年   10篇
  1967年   6篇
排序方式: 共有804条查询结果,搜索用时 15 毫秒
51.
We investigated the psychological impact of an organized visit to Polish concentration camps on Jewish-American adolescents. Eighty-seven adolescents who participated in a B'nai B'rith memorial visit to concentration camps in Poland completed measures of general psychological adjustment and posttraumatic stress disorder (PTSD) at four time-points: pretest, posttest, 6-month follow-up and 12-month follow-up. Measures included the SCL-90-R, the Mississippi Scale for PTSD, and the Impact of Events Scale (IES) for PTSD. On the SCL-90-R, changes in somatization, interpersonal sensitivity, obsessive-compulsive tendencies, depression, anxiety, and phobic anxiety were observed over time, with peak symptom scores at posttest and 6-month follow-up. Scores on the Mississippi Scale for PTSD and the IES Intrusion subscale also increased at 6-months. Predictors of PTSD symptoms on the Mississippi Scale included previous psychiatric treatment and SCL-90-R symptoms of paranoia, depression, and psychosis. Elevated psychotic symptoms on the SCL-90-R predicted PTSD symptoms on the IES. Jewish adolescents with preexisting symptoms of generalized distress or psychoticism appeared at increased risk for PTSD symptoms following exposure to Holocaust stimuli. This study contributes a prospective, multi-measure assessment of trauma reactions in adolescents.  相似文献   
52.
This exploratory study uses qualitative methods to focus on the largely unexamined role of the grandfather and to examine men's experiences as grandfathers. We gathered information through both surveys and individual interviews to explore men's feelings and attitudes toward the grandfather role. Of the 51 grandfathers that completed a survey, 20 participated in interviews. Our examination of the data collected reveals the life lessons men teach their grandchildren. The grandfathers in this study expressed strong desires for purposeful involvement in their grandchildren's lives and indicated desires for transferring values to grandchildren and teaching interpersonal relationships. Through this involvement, they educate through life experiences and serve as mentors for their grandchildren. We suggest that this mentoring role makes a positive contribution to the lives of grandchildren and to the identity of grandfathers.  相似文献   
53.
A remote-controlled device was developed for injection of fluids and collection of blood samples from freely moving, socially housed animals via an indwelling catheter. Samples are collected at times chosen by the investigator, and the animal is not aware that sampling is occurring. This technique allows measurement of plasma catecholamines and other substances that fluctuate rapidly, are affected by psychosocial stimuli, and are altered by capture and other stressful activities that often accompany sample collection. Rapid retrieval of samples is facilitated by remote-controlled injection of an anesthetic. The device has been used to collect blood from dominant and subordinate male baboons before and during events such as chases and presentation of food treats. Heart rate and blood pressure were measured via radio telemetry, and behavior was recorded on videotapes. This technique allowed construction of multifaceted physiological profiles of social roles and behaviors.  相似文献   
54.
Preference after training with differential changeover delays   总被引:3,自引:3,他引:0       下载免费PDF全文
Pigeons were trained on a multiple schedule in which each component consisted of concurrent variable-interval (VI) 30-s VI 60-s schedules. The two components of the multiple schedule differed only in terms of the changeover delays (COD): For one component short CODs were employed, and in the second component long CODs were used. After approximate matching was obtained in each component, probe tests involving new combinations of stimuli were presented (e.g., the VI 30-s schedule from each component) to determine how the different CODs affected preference. Despite shorter CODs producing higher changeover rates, the COD value had no systematic effect on preference on the probe trials. However, differences in reinforcement rate always produced preference for the schedule with the higher reinforcement rate. The results thus show that the the pattern of changeover behavior per se is not a critical determinant of choice in the probe-trial procedure.  相似文献   
55.
We compared the effects of reinforcing compliance with either positive reinforcement (edible items) or negative reinforcement (a break) on 5 participants' escape-maintained problem behavior. Both procedures were assessed with or without extinction. Results showed that compliance was higher and problem behavior was lower for all participants when compliance produced an edible item rather than a break. Treatment gains were achieved without the use of extinction. Results are discussed regarding the use of positive reinforcement to treat escape behavior.  相似文献   
56.
Daily activity levels were investigated as related to sleep quality in young adult college students aged 18 to 30 years. 85 participants (20 men, 65 women) completed the Young Adult Daily Activity Scale (YADAS). This 37-item checklist has 34 items based on focus group discussion points of college students' typical daily activities and three blank items for students to include their daily activities if not in the listing. The tabulation of type and amount of waking daily activities represents a unique measurement of factors that may affect sleep quality. The participants also rated their typical sleep quality using a standard 5-point scale (low indicating poor sleep). Correlations of sleep ratings and activities were not significant.  相似文献   
57.
Executive functions (EFs; e.g. working memory, inhibitory control) are mediated by the prefrontal cortex and associated with optimal cognitive and socio‐emotional development. This study provides the first concurrent analysis of the relative contributions of maternal EF and caregiving to child EF. A group of children and their mothers (= 62) completed age‐appropriate interaction (10, 24, 36 months) and EF tasks (child: 24, 36, and 48 months). Regression analyses revealed that by 36 months of age, maternal EF and negative caregiving behaviors accounted for unique variance in child EF, above and beyond maternal education and child verbal ability. These findings were confirmed when using an early child EF composite‐our most reliable measure of EF – and a similar pattern was found when controlling for stability in child EF. Furthermore, there was evidence that maternal EF had significant indirect effects on changes in child EF through maternal caregiving. At 24 months, EF was associated with maternal EF, but not negative caregiving behaviors. Taken together, these findings suggest that links between negative caregiving and child EF are increasingly manifested during early childhood. Although maternal EF and negative caregiving are related, they provide unique information about the development of child EF. A video abstract of this article can be viewed at http://www.youtube.com/watch?v=NPKXFbbrkps  相似文献   
58.
Four studies were conducted with two primary objectives: (a) to conceptualize and measure mental toughness from a behavioral perspective and (b) to apply relevant personality theory to the examination of between‐person differences in mentally tough behavior. Studies 1 (N = 305 participants from a range of different sports) and 2 (N = 110 high‐level cricketers) focused on the development of an informant‐rated mental toughness questionnaire that assessed individual differences in ability to maintain or enhance performance under pressure from a wide range of stressors. Studies 3 (N = 214) and 4 (N = 196) examined the relationship between reinforcement sensitivities and mentally tough behavior in high‐level cricketers. The highest levels of mental toughness reported by coaches occurred when cricketers were sensitive to punishment and insensitive to reward. Study 4 suggested that such players are predisposed to identify threatening stimuli early, which gives them the best possible opportunity to prepare an effective response to the pressurized environments they encounter. The findings show that high‐level cricketers who are punishment sensitive, but not reward sensitive, detect threat early and can maintain goal‐directed behavior under pressure from a range of different stressors.  相似文献   
59.
Addressing spirituality with clients from diverse spiritual backgrounds is a facet of culturally competent and ethical practice, yet various obstacles contribute to spirituality being overlooked. This article features a counseling technique used with clients who are experiencing difficulty with issues of a spiritual nature. Based on constructivist principles, the tree ring technique provides a context and process for examining clients’ spiritual conflicts, whereby the client is the expert and the counselor adopts a not‐knowing stance.  相似文献   
60.
The impact of negative stereotypes can be harmful, and as a result, stigmatized targets are often motivated to deny their accuracy. However, at times, targets of even the most unflattering stereotypes embrace them as valid. Early stigma researchers conceptualized this self‐stereotyping as a form of internalized self‐hatred. However, within the last few decades, stigma researchers have challenged this notion. This more contemporary approach asserts that there are situations where endorsing negative stereotypes can actually be of use to those who are targeted by them. For instance, endorsing negative self‐stereotypes can be used to help justify the status quo, fulfill assimilation and differentiation needs, and protect against personal and social threats. The purpose of the present paper is to review both traditional and contemporary explanations for the causes and consequences of negative self‐stereotyping. In doing so, we highlight strengths and limitations within the self‐stereotyping literature and suggest future directions for research.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号