全文获取类型
收费全文 | 1337篇 |
免费 | 93篇 |
专业分类
1430篇 |
出版年
2022年 | 11篇 |
2021年 | 15篇 |
2020年 | 22篇 |
2019年 | 19篇 |
2018年 | 33篇 |
2017年 | 44篇 |
2016年 | 40篇 |
2015年 | 31篇 |
2014年 | 30篇 |
2013年 | 126篇 |
2012年 | 48篇 |
2011年 | 54篇 |
2010年 | 41篇 |
2009年 | 43篇 |
2008年 | 57篇 |
2007年 | 52篇 |
2006年 | 36篇 |
2005年 | 40篇 |
2004年 | 45篇 |
2003年 | 40篇 |
2002年 | 33篇 |
2001年 | 36篇 |
2000年 | 49篇 |
1999年 | 38篇 |
1998年 | 21篇 |
1997年 | 17篇 |
1996年 | 15篇 |
1995年 | 13篇 |
1994年 | 18篇 |
1993年 | 15篇 |
1992年 | 15篇 |
1991年 | 20篇 |
1990年 | 16篇 |
1989年 | 15篇 |
1988年 | 11篇 |
1987年 | 19篇 |
1986年 | 10篇 |
1985年 | 15篇 |
1984年 | 12篇 |
1983年 | 10篇 |
1981年 | 10篇 |
1980年 | 11篇 |
1979年 | 12篇 |
1977年 | 11篇 |
1974年 | 16篇 |
1971年 | 13篇 |
1968年 | 11篇 |
1967年 | 10篇 |
1966年 | 17篇 |
1965年 | 14篇 |
排序方式: 共有1430条查询结果,搜索用时 15 毫秒
891.
Danice L. Brown Jeremy D. Jewell Amy L. Stevens Jessica D. Crawford Ronald Thompson 《Journal of child and family studies》2012,21(3):359-367
We investigated the relationship between gender and clinician diagnosis of a depressive disorder at intake on variables reflecting
depression among adolescents in residential treatment. It was hypothesized that females diagnosed with a depressive disorder
would have the highest scores on measures of suicide risk, the number of symptoms of a major depressive episode, suicidal
behavior, and suicidal ideation. Results indicated partial support for the predicted comparisons. Females diagnosed with a
depressive disorder scored significantly higher on measures of depressive symptom count and suicidal ideation. Surprisingly,
females without a diagnosis of a depressive disorder had higher suicide risk scores than the remaining groups. The results
of this study highlight the importance of assessment and treatment of internalizing disorders in youth entering residential
programs, particularly female adolescents. 相似文献
892.
Two studies describe the development and validation of the Verbal Commentary on Physical Appearance Scale (VCOPAS). In Study 1, 320 undergraduate female students completed the scale and factor analyses were conducted. Study 2 included 246 undergraduate female students and a confirmatory factor analysis (CFA) replicated the initial factor structure. The final VCOPAS consists of 21 items and contains three subscales (Negative Weight and Shape, Positive Weight and Shape, and Positive General Appearance). The total scale and subscales demonstrated good internal consistency and test–retest reliability (all >.70). Significant correlations were found between VCOPAS subscales and measures of physical appearance-related feedback, body image disturbance, and self-esteem. Regression analyses indicated the utility of the Negative Weight and Shape, Positive Weight and Shape, and Positive General Appearance subscales in explaining significant variance associated with body image disturbance and self-esteem. The VCOPAS is likely to be useful in future research examining the role of appearance-related commentary in the development and maintenance of body image dissatisfaction and eating disturbance. 相似文献
893.
894.
Early deceptive behavior often involves acts of wrongdoings on the part of children. As a result, it has often been assumed, although not tested directly, that children are better at identifying lies about wrongdoing than lies about other activities. We tested this assumption in two studies. In Study 1, 67 3- to 5-year-olds viewed vignettes in which a character truthfully or falsely claimed to have committed a good or bad act. Children were biased to label claims that the character had committed a good act as the truth and claims that the character had committed a bad act as lies. In Study 2, 51 4- to 6-year-olds viewed vignettes in which characters either admitted or denied committing a good or bad act. Children were better at identifying truth-tellers and liars when the acts were good. Results suggest that young children initially overgeneralize the concept of lie to include all negative acts and the concept of the truth to include all good acts and only gradually make a distinction between act valence and honesty. As a result, including wrongdoing in scenarios to test children's early understanding of the meaning of lying is likely to underestimate children's abilities. 相似文献
895.
The construct of self-silencing was proposed to account for women's greater vulnerability to developing depression. This study of 1,117 students (795 women and 322 men) explored possible explanations for the empirical finding that men self-silence to the same or greater extent than women. Analysis showed that men reported more self-silencing than women. A factor analysis confirmed the subscale structure of the Silencing the Self Scale for women and men, with relatively few departures from the originally proposed subscales. Depression and self-silencing scores were correlated positively for both men and women. The results of two multiple regressions, performed separately for men and women, showed that depressive symptomatology accounted for a significant percentage of the variance in self-silencing but that social desirability did not account for a significant increment in the variance accounted for in silencing the self. The scores on the Care as Self-sacrifice and the Divided Self subscales were intercorrelated for women, but not for men, indicating that there may be a sex difference in perception of self-silencing behavior. 相似文献
896.
Silk JS Forbes EE Whalen DJ Jakubcak JL Thompson WK Ryan ND Axelson DA Birmaher B Dahl RE 《Journal of experimental child psychology》2011,110(2):241-257
This study used a new cell phone ecological momentary assessment approach to investigate daily emotional dynamics in 47 youths with major depressive disorder (MDD) and 32 no-psychopathology controls (CON) (ages 7-17 years). Information about emotional experience in the natural environment was obtained using answer-only cell phones, while MDD youths received an 8-week course of cognitive behavioral therapy and/or psychopharmacological treatment. Compared with CON youths, MDD youths reported more intense and labile global negative affect; greater sadness, anger, and nervousness; and a lower ratio of positive to negative affect. These differences increased with pubertal maturation. MDD youths spent more time alone and less time with their families than CON youths. Although differences in emotional experiences were found across social contexts, MDD youths were more negative than CON youths in all contexts examined. As the MDD participants progressed through treatment, diagnostic group differences in the intensity and lability of negative affect decreased, but there were no changes in the ratio of positive to negative affect or in measures of social context. We discuss methodological innovations and advantages of this approach, including improved ecological validity and access to information about variability in emotions, change in emotions over time, the balance of positive and negative emotions, and the social context of emotional experience. 相似文献
897.
Modulation of lower limb somatosensory information by tendon or plantar vibration produces directionally specific, vibration-induced falling reactions that depend on the tendon or the region of the sole that is vibrated. This study characterized the effects of different patterns of plantar cutaneo-muscular vibration and bilateral Achilles tendon vibration (ATV) on the postural strategies observed during quiet and perturbed stance. Twelve healthy young participants stood barefooted, with their vision blocked, on two sets of plantar vibrators placed on two AMTI force plates embedded in a moveable support surface. Two other vibrators were positioned over the Achilles tendons. Participants were randomly exposed to different patterns of plantar cutaneo-muscular and ATV. Tilts of the support surface in the toes-up (TU) and toes-down (TD) directions were given 5-8 s after the beginning of vibration. Body kinematics in 3D and ground reaction forces were recorded. Bilateral ATV applied with or without rearfoot vibration (RFV) during quiet stance resulted in a whole-body backward leaning accompanied by an increase in trunk extension and hip and knee flexion. RFV alone produced a forward whole-body tilt with increased flexion in trunk, hip, and ankle. When stance was perturbed by TU tilts, the center of mass (CoM) and center of pressure (CoP) displacements were larger in the presence of RFV or ATV and associated with increased peak trunk flexion. TD tilts with or without ATV resulted in no significant difference in CoM and CoP displacements, while larger trunk extension and smaller distal angular displacements were observed during ATV. RFV altered the magnitude of the balance reactions, as observed by an increase in CoP displacements and variable response in trunk displacement. Significant interactions between ATV and RFV were obtained for the peak angular excursions for both directions of perturbations, where ATV either enhanced (for TU tilts) or attenuated (for TD tilts) the influence of RFV. Manipulating somatosensory information from the plantar cutaneo-muscular and muscle spindle Ia afferents thus results in altered and widespread postural responses, as shown by profound changes in body kinematics and CoM and CoP displacements. This suggests that the CNS uses plantar cutaneo-muscular and ankle spindle afferent inputs to build an appropriate reference of verticality that influences the control of equilibrium during quiet and perturbed stance. 相似文献
898.
As technology develops, social robots and synthetic avatars might begin to play more of a role in our lives. An influential theory of the perception of synthetic agents states that as they begin to look and move in a more human-like way, they elicit profound discomfort in the observer--an effect known as the Uncanny Valley. Previous attempts to examine the existence of the Uncanny Valley have not adequately manipulated movement parameters that contribute to perceptions of the humanness or eeriness. Here we parametrically manipulated three different kinematic features of two walking avatars and found that, contrary to the Uncanny Valley hypothesis, ratings of the humanness, familiarity, and eeriness of these avatars changed monotonically. Our results indicate that, when a full gradient of motion parameter changes is examined, ratings of synthetic agents by human observers do not show an Uncanny Valley. 相似文献
899.
Research into emotional communication to date has largely focused on facial and vocal expressions. In contrast, recent studies by Hertenstein, Keltner, App, Bulleit, and Jaskolka (2006) and Hertenstein, Holmes, McCullough, and Keltner (2009) exploring nonverbal communication of emotion discovered that people could identify anger, disgust, fear, gratitude, happiness, love, sadness and sympathy from the experience of being touched on either the arm or body by a stranger, without seeing the touch. The study showed that strangers were unable to communicate the self-focused emotions embarrassment, envy and pride, or the universal emotion surprise. Literature relating to touch indicates that the interpretation of a tactile experience is significantly influenced by the relationship between the touchers (Coan, Schaefer, & Davidson, 2006). The present study compared the ability of romantic couples and strangers to communicate emotions solely via touch. Results showed that both strangers and romantic couples were able to communicate universal and prosocial emotions, whereas only romantic couples were able to communicate the self-focused emotions envy and pride. 相似文献
900.
The current study examines agreement among individuals with varying expertise in behavior analysis about the length of baseline when data were presented point by point. Participants were asked to respond to baseline data and to indicate when to terminate the baseline phase. When only minimal information was provided about the data set, experts and Board Certified Behavior Analyst participants generated baselines of similar lengths, whereas novices did not. Agreement was similar across participants when variability was low but deteriorated as variability in the data set increased. Participants generated shorter baselines when provided with information regarding the independent or dependent variable. Implications for training and the use of visual inspection are discussed. 相似文献