全文获取类型
收费全文 | 3421篇 |
免费 | 116篇 |
国内免费 | 2篇 |
专业分类
3539篇 |
出版年
2019年 | 44篇 |
2018年 | 51篇 |
2017年 | 53篇 |
2016年 | 67篇 |
2015年 | 46篇 |
2014年 | 53篇 |
2013年 | 359篇 |
2012年 | 97篇 |
2011年 | 112篇 |
2010年 | 73篇 |
2009年 | 73篇 |
2008年 | 123篇 |
2007年 | 101篇 |
2006年 | 103篇 |
2005年 | 106篇 |
2004年 | 87篇 |
2003年 | 108篇 |
2002年 | 116篇 |
2001年 | 56篇 |
2000年 | 43篇 |
1999年 | 54篇 |
1998年 | 37篇 |
1997年 | 45篇 |
1996年 | 43篇 |
1995年 | 38篇 |
1994年 | 44篇 |
1993年 | 54篇 |
1992年 | 37篇 |
1991年 | 54篇 |
1990年 | 41篇 |
1989年 | 30篇 |
1988年 | 39篇 |
1987年 | 44篇 |
1986年 | 36篇 |
1985年 | 41篇 |
1984年 | 62篇 |
1983年 | 45篇 |
1982年 | 55篇 |
1981年 | 58篇 |
1980年 | 41篇 |
1979年 | 46篇 |
1978年 | 40篇 |
1977年 | 58篇 |
1976年 | 52篇 |
1975年 | 50篇 |
1974年 | 53篇 |
1973年 | 54篇 |
1972年 | 28篇 |
1967年 | 28篇 |
1966年 | 38篇 |
排序方式: 共有3539条查询结果,搜索用时 15 毫秒
891.
R. Ross MacLean Aaron L. Pincus Joshua M. Smyth Charles F. Geier Stephen J. Wilson 《Journal of psychopathology and behavioral assessment》2018,40(1):107-116
The Balloon Analogue Risk Task (BART) is a behavioral measure that is commonly used to assess risk taking propensity. The primary goal of the present study was to introduce a mobile version of the BART (mBART) that can be included within ambulatory assessment protocols to assess risk taking in daily life. Study 1 compared common BART indices (i.e., total money earned, adjusted average pumps, balloon explosions, and coefficient of variability [CV]) on a single administration of the laboratory BART on a computer and the mBART on a smartphone (n = 78). Results revealed generally consistent relationships between indices of risk taking propensity in both the laboratory BART and mBART. Study 2 administered the mBART as part of a 7-day ecological momentary assessment (EMA) protocol in a population of nondaily smokers (n = 51). Using multi-level models, results suggest that males have greater adjusted average pumps (p = .03), and that a participant’s average CV is negatively related to trait sensation seeking (p = .03) and positively associated with trait positive urgency (p = .04). There were within-person effects of study day (p = .05) and environment (p = .02) with respect to adjusted average pumps such that individuals took greater risks as the study progressed and were riskier when alone compared to with others. Inclusion of the mBART in EMA did not appear to significantly increase participant burden and demonstrated acceptable levels of compliance. These results offer initial evidence supporting the feasibility and utility of the mBART for ambulatory research designs. 相似文献
892.
Initial acts of self-control can reduce effort and performance on subsequent tasks – a phenomenon known as ego depletion. Ego depletion is thought to undermine the capacity or willingness to engage executive control, an important determinant of success for many tasks. We examined whether ego depletion improves performance on a task that favours less executive control: insight problem solving. In two experiments, participants completed an ego-depletion manipulation or a non-depleting control condition followed by an insight problem-solving task (i.e., matchstick arithmetic). Participants in the depleting condition demonstrated greater insight problem-solving accuracy than those in the non-depleting control condition. Priming theories of willpower did not impact these results. Although ego depletion is widely regarded as a “state of impairment”, attendant decreases in executive control may foster insightful thinking. 相似文献
893.
Brooke Y. Kauffman Lorra Garey Charles Jardin Michael W. Otto Amanda M. Raines Norman B. Schmidt 《Psychology, health & medicine》2018,23(2):232-243
Obesity and smoking are highly prevalent public health concerns in the United States. Data indicate that elevated Body Mass Index (BMI) is related to functional impairment. However, there is limited understanding of mechanisms that may explain their comorbidity among smokers. The current study sought to test whether anxiety sensitivity explained the relation between BMI and functional impairment among 420 (46.9% females; Mage = 38 years, SD = 13.42) treatment-seeking, adult smokers. Results indicated that BMI yielded a significant indirect effect through anxiety sensitivity for functional impairment, b = 0.01, SE = .01, 95% CI = [.002, .021]. These findings remained significant after controlling for participant sex, negative affectivity, tobacco dependence, psychopathology, and medical conditions (i.e. hypertension, heart problems, respiratory disease, asthma). Such data provide novel empirical evidence that, among smokers, BMI may be a risk factor for functional impairment indirectly through anxiety sensitivity. Overall, such findings could potentially inform the development of personalized interventions among this particularly vulnerable segment of the smoking population. 相似文献
894.
Krystal Warmoth Mark Tarrant Charles Abraham Iain A. Lang 《Psychology, health & medicine》2018,23(4):465-474
Older adults’ negative beliefs about ageing are related to their health and functioning, but little is known about how perceptions of ageing (POA) relate to frailty status. This study aimed to explore the relationship between POA and frailty. Secondary analysis of data used were from the English Longitudinal Study of Ageing Waves 2 and 5. A POA score was based on participants’ responses to 12 statements using a five-point Likert scale at baseline, and a Frailty Index (FI) score was calculated for each participant for both waves. Multiple linear regression models were conducted to assess the relationship between POA and frailty cross-sectionally and longitudinally in models controlled for age, gender, depression symptoms, and socioeconomic status. Older adults with more negative POA had greater frailty (β = .12, p < .001). Negative POA predicted greater frailty 6 years later (β = .03, p < .05). Future work regarding the mechanisms of this relationship is needed to identify ways of intervening to improve health. 相似文献
895.
We investigated the role of self-motivated behaviour in promoting intergroup member contact for intergroup harmony. A multi-ethnic group of 68 freshmen students attending a Nigerian state university were participants (female = 43.8%; Mean age = 22.15 years, SD = 2.35 years; Igbo = 45.6%, Hausa/Fulani = 20.4%, Yoruba = 24.5%, and others = 9.5%). By religious affiliation, the students comprised Christians (62%) and Muslims (38%). The students took part in an intergroup contact learning assignment designed for them to interact with others outside their class cohort and from a different ethnic group to themselves. They completed measures of self-motivated behaviours defined by self-efficacy, self-interest, learning predisposition, as well as intergoup harmony. Tests of mediation revealed significant positive indirect effects of intergroup member contact on intergroup harmony through self-efficacy, self-interest, and learning behaviour. Self-motivated behaviour fully mediated the relationship between intergroup contact and intergroup harmony among students in Nigerian multi-ethnic settings. Self-motivated behaviour may facilitate peace-building and intergroup harmony, for management of intergroup relations, among Nigerian major ethnic groups premised on intergroup contact. 相似文献
896.
Dwight W. Irvin Stephen A. Crutchfield Charles R. Greenwood William D. Kearns Jay Buzhardt 《Behavior research methods》2018,50(3):890-901
Children’s movement is an important issue in child development and outcome in early childhood research, intervention, and practice. Digital sensor technologies offer improvements in naturalistic movement measurement and analysis. We conducted validity and feasibility testing of a real-time, indoor mapping and location system (Ubisense, Inc.) within a preschool classroom. Real-time indoor mapping has several implications with respect to efficiently and conveniently: (a) determining the activity areas where children are spending the most and least time per day (e.g., music); and (b) mapping a focal child’s atypical real-time movements (e.g., lapping behavior). We calibrated the accuracy of Ubisense point-by-point location estimates (i.e., X and Y coordinates) against laser rangefinder measurements using several stationary points and atypical movement patterns as reference standards. Our results indicate that activity areas occupied and atypical movement patterns could be plotted with an accuracy of 30.48 cm (1 ft) using a Ubisense transponder tag attached to the participating child’s shirt. The accuracy parallels findings of other researchers employing Ubisense to study atypical movement patterns in individuals at risk for dementia in an assisted living facility. The feasibility of Ubisense was tested in an approximately 90-min assessment of two children, one typically developing and one with Down syndrome, during natural classroom activities, and the results proved positive. Implications for employing Ubisense in early childhood classrooms as a data-based decision-making tool to support children’s development and its potential integration with other wearable sensor technologies are discussed. 相似文献
897.
A resurgence of interest in inner speech as a core feature of human experience has not yet coincided with methodological progress in the empirical study of the phenomenon. The present article reports the development and psychometric validation of a novel instrument, the Varieties of Inner Speech Questionnaire (VISQ), designed to assess the phenomenological properties of inner speech along dimensions of dialogicality, condensed/expanded quality, evaluative/motivational nature, and the extent to which inner speech incorporates other people’s voices. In response to findings that some forms of psychopathology may relate to inner speech, anxiety, depression, and proneness to auditory and visual hallucinations were also assessed. Anxiety, but not depression, was found to be uniquely positively related to both evaluative/motivational inner speech and the presence of other voices in inner speech. Only dialogic inner speech predicted auditory hallucination-proneness, with no inner speech variables predicting levels of visual hallucinations/disturbances. Directions for future research are discussed. 相似文献
898.
In the present review, we focus on how commonalities in the ontogenetic development of the auditory and tactile sensory systems may inform the interplay between these signals in the temporal domain. In particular, we describe the results of behavioral studies that have investigated temporal resolution (in temporal order, synchrony/asynchrony, and simultaneity judgment tasks), as well as temporal numerosity perception, and similarities in the perception of frequency across touch and hearing. The evidence reviewed here highlights features of audiotactile temporal perception that are distinctive from those seen for other pairings of sensory modalities. For instance, audiotactile interactions are characterized in certain tasks (e.g., temporal numerosity judgments) by a more balanced reciprocal influence than are other modality pairings. Moreover, relative spatial position plays a different role in the temporal order and temporal recalibration processes for audiotactile stimulus pairings than for other modality pairings. The effect exerted by both the spatial arrangement of stimuli and attention on temporal order judgments is described. Moreover, a number of audiotactile interactions occurring during sensory-motor synchronization are highlighted. We also look at the audiotactile perception of rhythm and how it may be affected by musical training. The differences emerging from this body of research highlight the need for more extensive investigation into audiotactile temporal interactions. We conclude with a brief overview of some of the key issues deserving of further research in this area. 相似文献
899.
Christopher A. D. Charles 《Sexuality & culture》2011,15(4):375-390
This article focuses on the sexual attraction motive for skin bleaching in Jamaica. Some captive Africans on plantations in
Jamaica altered their complexion. These Africans modeled the British in the colony who bleached their skin to protect the
“superior,” “sexy,” and ideal white skin from the “impurities” of interracial sex and the tropical climate. The beauty and
sexual attraction accorded to light skin was also evident in skin bleaching newspaper ads in the 1950s. The ads told women
that acquiring light complexion through skin bleaching would make them sexually attractive to men. The persistence of colorism
and its most blatant expression—skin bleaching—is also evident in contemporary Jamaica as expressed in some dancehall songs
which praise skin bleachers, and the explanatory narratives of skin bleachers that bleaching makes them pretty and sexually
attractive to potential spouses. Similar themes are reflected in the criticism that the browning Dancehall Queen Carlene was
deemed sexually attractive and choreographically talented only because of her brown physicality. Some spouses request that
their partner acquire the bleached physicality because they find it sexually attractive similar to many male clients in “massage
parlors” who only request female sex workers who bleach their skin. 相似文献
900.
Charles J. Abaté 《Science and engineering ethics》2011,17(3):583-596
Should engineering ethics be taught? Despite the obvious truism that we all want our students to be moral engineers who practice virtuous professional behavior, I argue, in this article that the question itself obscures several ambiguities that prompt preliminary resolution. Upon clarification of these ambiguities, and an attempt to delineate key issues that make the question a philosophically interesting one, I conclude that engineering ethics not only should not, but cannot, be taught if we understand “teaching engineering ethics” to mean training engineers to be moral individuals (as some advocates seem to have proposed). However, I also conclude that there is a justification to teaching engineering ethics, insofar as we are able to clearly identify the most desirable and efficacious pedagogical approach to the subject area, which I propose to be a case study-based format that utilizes the principle of human cognitive pattern recognition. 相似文献