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   117篇
  免费   5篇
  2023年   1篇
  2019年   5篇
  2018年   6篇
  2017年   3篇
  2016年   6篇
  2015年   2篇
  2014年   1篇
  2013年   16篇
  2012年   5篇
  2011年   7篇
  2010年   1篇
  2009年   1篇
  2008年   3篇
  2007年   7篇
  2006年   4篇
  2004年   3篇
  2003年   5篇
  2002年   3篇
  2001年   6篇
  2000年   1篇
  1999年   2篇
  1998年   1篇
  1995年   1篇
  1994年   1篇
  1993年   3篇
  1990年   3篇
  1988年   2篇
  1986年   1篇
  1984年   3篇
  1983年   2篇
  1981年   3篇
  1980年   1篇
  1979年   2篇
  1978年   1篇
  1977年   1篇
  1973年   1篇
  1971年   1篇
  1970年   1篇
  1969年   4篇
  1967年   1篇
  1965年   1篇
排序方式: 共有122条查询结果,搜索用时 15 毫秒
41.
42.
Support interventions have not changed smoking cessation rates significantly. The pregnancy-postpartum continuum presents a unique opportunity to examine patterns of support. Expectant couples (N = 477) were surveyed twice during pregnancy and 3 times postpartum. Partners reported positive and negative smoking-specific support; women reported the helpfulness of partner support. Linear trends suggest that women viewed support as more helpful during pregnancy than during postpartum. Partners' provision of positive support across the continuum depended on their smoking; provision of negative support depended on women's smoking. Partners who smoked provided lower levels of both positive and negative support, especially postpartum. Women who smoked throughout the pregnancy perceived their partner's negative support as helpful. Implications are that partners who smoke may need help staying engaged in the support process. Partners may provide negative support in response to women's smoking cues. Women who are struggling with cessation may not view negative support as negative.  相似文献   
43.
This study examined patterns of association between experiencing 12 traumatic life events, resilience, and substance use at a conservative church-affiliated university. The authors used data (N?=?278) from a Health Risk and Protective Factors Study that was conducted during the 2012 spring semester. Initial bivariate analysis indicated several significant positive and negative associations between three of the traumatic life event variables and alcohol, marijuana, and tobacco use within the past year and between two of the traumatic life event variables and alcohol use within the past 30 days. Preliminarily, resilience was only inversely associated with amphetamine use within the past year for men. When examined further using partial correlations to clarify these relationships while controlling for resilience, strong significant positive associations were found specifically between experiencing a disaster-type event and alcohol use within the past year and within the past 30 days for men only. Overall significant moderate positive associations were found between experiencing parental divorce and alcohol use within the past year, and between experiencing a disaster-type event and alcohol use within the past year and within the past 30 days. Use of two-way between-groups ANOVA found no significant interaction among these variables. Results may suggest that experiencing certain traumatic life events and male gender are more likely connected to alcohol use behaviors, whereas resilience may have multiple pathways for adaptive coping.  相似文献   
44.
This study examined pinyin (the official phonetic system that transcribes the lexical tones and pronunciation of Chinese characters) invented spelling and English invented spelling in 72 Mandarin-speaking 6th graders who learned English as their second language. The pinyin invented spelling task measured segmental-level awareness including syllable and phoneme awareness, and suprasegmental-level awareness including lexical tones and tone sandhi in Chinese Mandarin. The English invented spelling task manipulated segmental-level awareness including syllable awareness and phoneme awareness, and suprasegmental-level awareness including word stress. This pinyin task outperformed a traditional phonological awareness task that only measured segmental-level awareness and may have optimal utility to measure unique phonological and linguistic features in Chinese reading. The pinyin invented spelling uniquely explained variance in Chinese conventional spelling and word reading in both languages. The English invented spelling uniquely explained variance in conventional spelling and word reading in both languages. Our findings appear to support the role of phonological activation in Chinese reading. Our experimental linguistic manipulations altered the phonological awareness item difficulties.  相似文献   
45.
This phenomenological study explored the experiences and needs of 11 individuals of the homeless population. Results revealed 5 themes: need for employment, perceptions of needs, perceptions of programs and shelters, coping mechanisms, and perceptions of treatment. Counseling implications for practice are discussed. Este estudio fenomenológico explore las experiencias y necesidades de 11 individuos de la población sin techo. Los resultados revelaron 5 temas: la necesidad de empleo, las percepciones de sus necesidades, las percepciones de los programas y albergues, los mecanismos de afrontamiento y las percepciones de tratamiento. Se discuten las implicaciones para la práctica de la consejería.  相似文献   
46.
The purpose of this study was to examine the effectiveness of evidence-based recruitment and retention strategies for a longitudinal, family-based HIV prevention intervention study targeting adolescents in psychiatric care by (1) determining consent rate (recruitment), rate of participation at the first intervention session (retention), and follow-up attendance rate (retention); and (2) examining socio-demographic factors, family-level processes, sexual risk-related indices, and intervention factors (i.e., treatment arm) associated with study retention. Only one-third of the families contacted ultimately enrolled in the study. 81% of those enrolled participated in the workshop and 72% attended the booster sessions with no significant differences between families on any variable based on attendance. Retention over 1?year was 85% and did not differ by treatment arm. Strategies employed were successful at retaining families once they were enrolled. Findings highlight barriers to enrollment for adolescents in psychiatric care and suggest that it may be critical to integrate HIV prevention programs within community-based mental health services in order to counteract recruitment challenges.  相似文献   
47.
The performance of 14 soldiers was evaluated during 3 hr of simulated sentry duty when (a) the primary work rate was varied and (b) participants were required to intermittently perform a simple secondary task. Performance measurements included latency to detect a target, number of correct target detections, correct friend versus foe identification, targets hit, and latency to respond to the presentation of a continuous tone (secondary task). Activity monitors measured motor activity during study participation. During higher work rate sessions, participants responded to the appearance of a target more quickly, discriminated friend from foe more accurately, and hit more foe targets. The addition of a simple auditory task to the primary task did not affect performance on any of the sentry duty measures. These findings demonstrated that moderate increases in task engagement, or work rate, improved most performance metrics on a long duration (3-hr), militarily relevant vigilance task.  相似文献   
48.
Repeating target features across consecutive visual search trials can influence response time. Three experiments are reported that show that this repetition priming is dependent on the exact stimulus configuration and feature type. In Experiment 1 the target was defined relative to distractors by its orientation and target colour was task irrelevant. The roles played by these features were reversed in Experiment 2. Repeating target colour across trials speeded responses in both Experiments 1 and 2. Repeating orientation significantly slowed responses in Experiment 1 but had no significant effect in Experiment 2. Existing feature-based and episodic memory-based explanations of priming cannot account for these data, but instead more flexible explanations are required. Experiment 3 showed that significant positive priming results from repeating distractor-defining orientation, indicating that priming of pop-out effects previously reported in the literature may result from combined target and distractor effects.  相似文献   
49.
Previous research has shown that perception of maximum reaching height is relative to reaching ability even when the means of performing this behavior would bring about (future) changes in reaching ability. Two experiments investigate whether this continues to be the case even when the means of reaching are no longer in view. The results show perception of maximum reaching height reflects impending changes to reaching ability both when the means of performing the reaching task (and changing reaching ability) are present and when they are no longer in view. The results are discussed in the context of prospectivity, retrospectivity, and flexibility—3 fundamental hallmarks of goal-directed behavior.  相似文献   
50.
Huntington’s disease (HD) patients show reduced flexibility in inhibiting an already-started response. This can be quantified by the stop-signal task. The aim of this study was to develop and validate a sheep version of the stop-signal task that would be suitable for monitoring the progression of cognitive decline in a transgenic sheep model of HD. Using a semi-automated operant system, sheep were trained to perform in a two-choice discrimination task. In 22% of the trials, a stop-signal was presented. Upon the stop-signal presentation, the sheep had to inhibit their already-started response. The stopping behaviour was captured using an accelerometer mounted on the back of the sheep. This set-up provided a direct read-out of the individual stop-signal reaction time (SSRT). We also estimated the SSRT using the conventional approach of subtracting the stop-signal delay (i.e., time after which the stop-signal is presented) from the ranked reaction time during a trial without a stop-signal. We found that all sheep could inhibit an already-started response in 91% of the stop-trials. The directly measured SSRT (0.974 ± 0.04 s) was not significantly different from the estimated SSRT (0.938 ± 0.04 s). The sheep version of the stop-signal task adds to the repertoire of tests suitable for investigating both cognitive dysfunction and efficacy of therapeutic agents in sheep models of neurodegenerative disease such as HD, as well as neurological conditions such as attention deficit hyperactivity disorder.  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