全文获取类型
收费全文 | 5938篇 |
免费 | 486篇 |
国内免费 | 10篇 |
专业分类
6434篇 |
出版年
2023年 | 91篇 |
2022年 | 47篇 |
2021年 | 55篇 |
2020年 | 202篇 |
2019年 | 136篇 |
2018年 | 183篇 |
2017年 | 225篇 |
2016年 | 249篇 |
2015年 | 156篇 |
2014年 | 199篇 |
2013年 | 831篇 |
2012年 | 253篇 |
2011年 | 246篇 |
2010年 | 194篇 |
2009年 | 192篇 |
2008年 | 231篇 |
2007年 | 230篇 |
2006年 | 206篇 |
2005年 | 149篇 |
2004年 | 131篇 |
2003年 | 132篇 |
2002年 | 138篇 |
2001年 | 119篇 |
2000年 | 92篇 |
1999年 | 89篇 |
1998年 | 61篇 |
1997年 | 44篇 |
1996年 | 88篇 |
1995年 | 86篇 |
1994年 | 75篇 |
1993年 | 61篇 |
1992年 | 95篇 |
1991年 | 77篇 |
1990年 | 74篇 |
1989年 | 61篇 |
1988年 | 65篇 |
1987年 | 54篇 |
1986年 | 60篇 |
1985年 | 53篇 |
1984年 | 38篇 |
1983年 | 35篇 |
1982年 | 44篇 |
1981年 | 34篇 |
1980年 | 39篇 |
1979年 | 48篇 |
1978年 | 72篇 |
1977年 | 59篇 |
1975年 | 37篇 |
1974年 | 35篇 |
1968年 | 30篇 |
排序方式: 共有6434条查询结果,搜索用时 0 毫秒
1.
William Alex Pridemore PhD Adam Trahan MA Mitchell B. Chamlin PhD 《Suicide & life-threatening behavior》2009,39(6):659-670
There is substantial evidence of detrimental psychological sequelae following disasters, including terrorist attacks. The effect of these events on extreme responses such as suicide, however, is unclear. We tested competing hypotheses about such effects by employing autoregressive integrated moving average techniques to model the impact of September 11 and the Oklahoma City bombing on monthly suicide counts at the local, state, and national level. Unlike prior studies that provided conflicting evidence, rigorous time series techniques revealed no support for an increase or decrease in suicides following these events. We conclude that while terrorist attacks produce subsequent psychological morbidity and may affect self and collective efficacy well beyond their immediate impact, these effects are not strong enough to influence levels of suicide mortality. 相似文献
2.
Eun‐Ju Lee 《人类交流研究》2004,30(2):234-259
Two experiments investigated if and how visual representation of interactants affects depersonalization and conformity to group norms in anonymous computer‐mediated communication (CMC). In Experiment 1, a 2 (intergroup versus interpersonal) × 2 (same character versus different character) between‐subjects design experiment (N= 60), each participant made a decision about social dilemmas after seeing two other (ostensible) participants’ unanimous opinions and then exchanged supporting arguments. Consistent with the Social Identity model of Deindividuation Effects (SIDE), when the group level of self‐identity was rendered salient in an intergroup encounter, uniform virtual appearance of CMC partners triggered depersonalization and subsequent conformity behavior. By contrast, when the personal dimension of the self was salient, standardized representation tended to reduce conformity. To elucidate the mediation process, Experiment 2 investigated the causal links between depersonalization, group identification, and conformity. The results show that depersonalization accentuated adherence to group norms, both directly and indirectly via group identification. 相似文献
3.
Kwan Min Lee 《人类交流研究》2004,30(2):182-207
Two experiments examine the effect of multiple synthetic voices in an e‐commerce context. In Study 1, participants (N= 40) heard five positive reviews about a book from five different synthetic voices or from a single synthetic voice. Consistent with the multiple source effect, results showed that participants hearing multiple synthetic voices evaluated the reviewed books more positively, predicted more favorable public reaction to the books, and felt greater social presence of virtual speakers. The effects were mediated by participants’ feelings of social presence. The second experiment (N= 40) showed that the observed effects persisted even when participants were shown the purely artificial nature of synthesized speech. These results support the idea that characteristics of synthetic voices in doubly disembodied language settings influence participants’ imagination of virtual speakers, and that technological literacy does not hinder social responses to anthropomorphic technologies such as text‐to‐speech (TTS). 相似文献
4.
Marcellus M Merritt Gary G Bennett Redford B Williams Christopher L Edwards John J Sollers 《Health psychology》2006,25(3):364-369
This study evaluated cardiovascular responses (CVR) to an active speech task with blatantly discriminatory (BRC) versus neutral (NRC) stimuli and an anger recall task in a sample of Black men (N = 73; age 18 to 47). Diastolic blood pressure scores were higher for NRC versus BRC stimuli during anger recall (p = .05). Moreover, persons in the NRC group who perceived high levels of racism (vs. no racism or BRC group) during active speech showed larger increases in blood pressure across postspeech rest, anger recall, and subsequent rest (p = .03). The notable elevation in CVR in response to an ambiguous event extends current models of racism suggesting that subtle racism is a psychosocial stressor that erodes health through chronically elevated CVR. 相似文献
5.
6.
Collin L. Davidson MS LaRicka R. Wingate PhD Kathy A. Rasmussen BA Meredith L. Slish BA 《Suicide & life-threatening behavior》2009,39(5):499-507
The current study hypothesized that (1) hope would negatively predict burdensomeness, thwarted belongingness, and acquired capability to enact lethal injury; (2) hope would negatively predict suicidal ideation; and (3) the interpersonal suicide risk factors would predict suicidal ideation. Results indicated that hope negatively predicted burdensomeness and thwarted belongingness, but positively predicted acquired capability to enact suicide. Contrary to our second hypothesis, hope did not predict suicidal ideation, but interpersonal risk factors for suicide predicted suicidal ideation. Results are discussed in terms of implications for hope theory and Joiner's (2005) interpersonal risk factors for suicide, and for clinical practice. 相似文献
7.
Population attributable risk (PAR) estimates have been used in suicide research to evaluate the impact of psychosocial and socioeconomic risk factors, including affective disorders, traumatic life events, and unemployment. A parallel concept of preventive fraction (PF), allowing for estimation of the impact of protective factors and effectiveness of preventive interventions, is practically unknown in suicidology. The study authors discuss the application of both concepts to suicide research and prevention, and review literature on the subject. Despite several methodological and conceptual limitations, both PAR and PF are valuable instruments to inform development and evaluation of suicide prevention programs. 相似文献
8.
9.
10.
N B Anderson R B Williams J D Lane T Haney S Simpson S J Houseworth 《Health psychology》1986,5(4):393-406
The purpose of this study was to determine the effects of Type A behavior and family history of hypertension on cardiovascular reactivity to mental stress in a group of employed black women. Measures of heart rate and of systolic blood pressure (SBP) and diastolic blood pressure (DBP) were taken at rest, during a mental arithmetic task, and during the Type A Structured Interview (SI). Results indicated that the Type A behavior pattern was associated with SBP and DBP hyperresponsivity during the SI but not during mental arithmetic. Additionally, certain speech components of the Type A pattern, as well as features of the potential-for-hostility component, were also related to cardiovascular responses during the SI. Family history of hypertension did not influence the cardiovascular parameters either alone or in combination with Type A behavior. The results suggest that many of the cardiovascular response characteristics of the Type A pattern that have been observed in predominantly white samples also hold true for blacks. Replication of these findings with other subgroups of blacks, such as young females and middle-aged males, will help document the generality of these findings within the black population. 相似文献