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61.
Guest D Kent C Adelman JS 《Journal of experimental psychology. Human perception and performance》2010,36(6):1609-1630
Nosofsky (1983) reported that additional stimulus presentations within a trial increase discriminability in absolute identification, suggesting that each presentation creates an independent stimulus representation, but it remains unclear whether exposure duration or the formation of independent representations improves discrimination in such conditions. Experiment 1 replicated Nosofsky's result. Experiments 2 (masking the ISI between two-presentations) and 3 (manipulating stimulus duration without changing number of presentations or overall trial duration) ruled out an explanation in terms of extended opportunities for stimulus sampling, from either a sensory buffer during additional ISIs or increased stimulus exposure, respectively. Experiment 4 (comparing two and three-presentations, other factors controlled) provided some limited additional support for Nosofsky's original claim that additional stimulus presentations can create either independent or duplicate representations. Experiments 5 and 6 (both manipulating ISI) demonstrated that a key factor in the additional stimulus presentation effect is the overall trial duration. We discuss the results in relation to models of absolute identification, their relative emphasis on stimulus sampling versus response selection, and the mechanisms by which duplicate representations could be created. 相似文献
62.
Kent Staley 《Synthese》2008,163(3):397-408
I consider the error-statistical account as both a theory of evidence and as a theory of inference. I seek to show how inferences
regarding the truth of hypotheses can be upheld by avoiding a certain kind of alternative hypothesis problem. In addition
to the testing of assumptions behind the experimental model, I discuss the role of judgments of implausibility. A benefit
of my analysis is that it reveals a continuity in the application of error-statistical assessment to low-level empirical hypotheses
and highly general theoretical principles. This last point is illustrated with a brief sketch of the issues involved in the
parametric framework analysis of tests of physical theories such as General Relativity and of fundamental physical principles
such as the Einstein Equivalence Principle. 相似文献
63.
Andra L. Teten Ph.D. Lisa A. Miller M.D. Sara D. Bailey Ph.D. Nancy Jo Dunn Ph.D. Thomas A. Kent M.D. 《Behavioral sciences & the law》2008,26(6):823-832
Our long term interest is to develop a developmental model of impulsive aggression based on a confluence of social, psychological and biological features. This approach incorporates neurobiological research, which has identified language processing deficits as a unique characteristic of impulsive aggressors and extends it to include emotional deficits. As an initial test of this hypothesis, we examined whether empathy and alexithymia were associated with impulsive aggression. Regressions were performed to explore the associations among impaired empathy, alexithymia, impulsive aggression, verbal and physical general aggression. Among impulsive aggressive veterans (n = 38) recruited from a VA trauma clinic, alexithymia predicted impulsive aggression and empathic deficits predicted verbal aggression. Neither emotional awareness deficit predicted general physical aggression in this middle-aged sample. Results suggested that empathic deficits were associated with general verbal aggression, but alexithymia was uniquely associated with impulsive aggression. Consideration of alexithymia in impulsive aggression has implications for its etiology, prevention and treatment. Published in 2008 by John Wiley & Sons, Ltd. 相似文献
64.
In order to estimate the effects of affluence on political attitudes, we conducted interviews with 342 people who had won the lottery between 1983 and 2000 in an Eastern state. A parallel survey of the general public was also conducted. Comparing winners of varying amounts, we find that lottery-induced affluence increases hostility toward estate taxes, marginally increases hostility towards government redistribution, but has little effect on broader attitudes concerning economic stratification or the role of government as a provider of social insurance. These results bolster previous findings suggesting that economic self-interest influences policy preferences when policy consequences are perceived as salient. At the same time, the findings suggest the limited influence that material concerns have on one's broad political outlook. 相似文献
65.
66.
Diane E. Mack Heather A. Strong Kent C. Kowalski Peter R. E. Crocker 《Journal of applied social psychology》2007,37(6):1248-1264
The role of peer group composition and influence variables on social physique anxiety was examined. Peer network data were gathered on 375 adolescents (181 male, 194 female). Females reported experiencing higher social physique anxiety, more pressure and encouragement to alter their physique from peers, greater body‐related discussion, and greater identification with the peer group than did males. Regression analyses revealed 2 peer influence variables—peer pressure and relative attractiveness of peers—to be significant predictors of social physique anxiety. A third variable—extent to which the individual identified with peer network—was a significant predictor for females. Results are discussed in reference to previous research, and future research directions are identified. 相似文献
67.
Natural variation in Drosophila larval reward learning and memory due to a cGMP-dependent protein kinase 总被引:1,自引:0,他引:1 下载免费PDF全文
Kaun KR Hendel T Gerber B Sokolowski MB 《Learning & memory (Cold Spring Harbor, N.Y.)》2007,14(5):342-349
Animals must be able to find and evaluate food to ensure survival. The ability to associate a cue with the presence of food is advantageous because it allows an animal to quickly identify a situation associated with a good, bad, or even harmful food. Identifying genes underlying these natural learned responses is essential to understanding this ability. Here, we investigate whether natural variation in the foraging (for) gene in Drosophila melanogaster larvae is important in mediating associations between either an odor or a light stimulus and food reward. We found that for influences olfactory conditioning and that the mushroom bodies play a role in this for-mediated olfactory learning. Genotypes associated with high activity of the product of for, cGMP-dependent protein kinase (PKG), showed greater memory acquisition and retention compared with genotypes associated with low activity of PKG when trained with three conditioning trials. Interestingly, increasing the number of training trials resulted in decreased memory retention only in genotypes associated with high PKG activity. The difference in the dynamics of memory acquisition and retention between variants of for suggests that the ability to learn and retain an association may be linked to the foraging strategies of the two variants. 相似文献
68.
The relation between reinforcer magnitude and timing behavior was studied using a peak procedure. Four rats received multiple consecutive sessions with both low and high levels of brain stimulation reward (BSR). Rats paused longer and had later start times during sessions when their responses were reinforced with low-magnitude BSR. When estimated by a symmetric Gaussian function, peak times also were earlier; when estimated by a better-fitting asymmetric Gaussian function or by analyzing individual trials, however, these peak-time changes were determined to reflect a mixture of large effects of BSR on start times and no effect on stop times. These results pose a significant dilemma for three major theories of timing (SET, MTS, and BeT), which all predict no effects for chronic manipulations of reinforcer magnitude. We conclude that increased reinforcer magnitude influences timing in two ways: through larger immediate after-effects that delay responding and through anticipatory effects that elicit earlier responding. 相似文献
69.
Gwendolyn L. Gerber 《Sex roles》2009,61(5-6):297-316
This paper integrates research findings on status and the gender stereotyped personality traits and examines the extent to which women’s lower status than men can account for two components of gender stereotyping in the United States: the belief that women and men have different personality traits and the differences in men’s and women’s perceptions of their own personality traits. In addition, it examines the extent to which status affects the evaluations associated with both genders’ self-perceived traits. Personality traits include the instrumental-assertive and expressive attributes that have been the focus of most theory and research, in addition to the instrumental-dominating, complaining, submissive, and bipolar attributes. Formulations involving the link with status are presented for each of these personality attributes. 相似文献
70.
This study examined the extent to which disappointment with God influenced the psychological and spiritual well‐being of 160 churchgoers, and the potential mediating influences of relationship quality (spiritual maturity and relationship commitment) and dispositional forgiveness. Disappointment with God was positively related to depression and stress and negatively related to spiritual well‐being, dispositional forgiveness, spiritual maturity, and relationship commitment. The latter 3 were negatively related to depression and stress and positively associated with spiritual well‐being. The results suggest an explanation for why religious individuals disappointed with God tend to experience reduced well‐being outcomes. Counseling implications are discussed. 相似文献