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311.
Reference frames in mental rotation 总被引:1,自引:0,他引:1
L C Robertson S E Palmer L M Gomez 《Journal of experimental psychology. Learning, memory, and cognition》1987,13(3):368-379
Four experiments are reported that investigate whether images or reference frames are transformed during a mental rotation task. In all experiments a display of four identical letters (P1) was presented at either +90 degrees or -90 degrees from upright, and subjects had to decide whether the letters were normal or mirror-image reflections. A single letter (P2) was then presented 100 ms later in a variable orientation with the same task instructions. Reaction times to P2 were assessed to determine whether an image of P2 was rotated to upright or whether an internal reference frame was rotated into congruence with P2 from the orientation of P1. The results as a whole suggest that transformations of P2 can be initiated either relative to upright or relative to the orientation of P1. They further indicate that the probability of using each reference orientation can be changed by procedural variations. The findings are most parsimoniously interpreted as suggesting that mental rotation involves the transformation of reference frames rather than the transformation of template-like representations. 相似文献
312.
313.
Connie Y. Benfield Douglas J. Palmer Betty Pfefferbaum Michael L. Stowe 《Journal of abnormal child psychology》1988,16(4):397-410
Upon admission to a hospital treatment program, clinically depressed and nondepressed children (aged 9–17 years) were assessed on measures of attributional style, hopelessness, depression, life stress, and child temperament. The depressed group tended to attribute positive events to specific and unstable factors when compared with the nondepressed sample. Group differences also were found on child temperament measures. However, no differences were reported between the diagnostic groups on self-reported depression, hopelessness, or life stress. The findings suggested that there may not be a unique constellation of cognitive characteristics in depressed children when compared with a nondepressed clinical sample. For both depressed and nondepressed groups, treatment did appear to affect self-reported depression and overall ratings of depressogenic attributional style. 相似文献
314.
C F Palmer R K Jones B L Hennessy M G Unze A D Pick 《The American journal of psychology》1989,102(1):17-37
What are the object properties that serve as a basis for the musical instrument classification system, and how do general and specific experience affect knowledge of these properties? In the first study, the multimodal quality of properties underlying children's and adults' perception was investigated. Subjects listened to solos and identified instruments producing the sounds. Even children who did not have experience with all the instruments correctly identified the family of instruments they were listening to. The hypothesis of the second study, that musical instrument families function as a "basic level" in the instrument taxonomy, was confirmed. Variation in the basic level with varying expertise was documented in the third study with musicians. In the fourth study, children and adults identified the source of sounds from unfamiliar objects, Chinese musical instruments. It is suggested that the concept of affordances may be relevant for understanding the importance for behavior of different levels of abstraction of category systems. 相似文献
315.
Georgios D. Sideridis Cheryl Utley Charles R. Greenwood Joseph Delquadri Harriett Dawson Penny Palmer Shalini Reddy 《Journal of Behavioral Education》1997,7(4):435-462
The effectiveness of Classwide Peer Tutoring (CWPT) to enhance the spelling performance and social interactions of three typical students and three students with mild disabilities was investigated. The classroom ecology was measured using the New Code for Instructional Structure and Student Academic Response (NCISSAR). Social interactions were assessed using the Multiple Option Observation System for Experimental Studies (M.O.O.S.E.S.). Spelling performance was measured by weekly pre-posttests. Using an ABAB single-subject design, results indicated that CWPT resulted in: (a) gains in the spelling accuracy of all students (up to 49%), (b) increases of students' duration of positive social interactions (up to 86%), and (c) high satisfaction ratings for both the students and the teacher. Comparisons between typical students and students with mild disabilities during CWPT suggested no differences in their duration of social interactions. Furthermore, the mean spelling accuracy of the students with mild disabilities was comparable to the spelling accuracy of the typical students (91% vs. 96%, respectively). Implications of the findings for the inclusion of students with mild disabilities in general education settings are discussed. 相似文献
316.
David Palmer 《The Southern journal of philosophy》1973,11(4):299-308
317.
An experimental analysis of electricity conservation procedures 总被引:2,自引:0,他引:2
Daily electricity consumption of four families was recorded for 106 days. A reversal design, consisting of various experimental conditions interspersed between repeated baseline conditions, was used. During experimental conditions, daily prompts (written conservation slogans attached to front doors) and/or daily feedback (daily kilowatts consumed and daily cost information) were in effect. Maximum consumption occurred during the initial baseline; minimum consumption occurred during different experimental conditions for different families. The mean decrease from the maximum to the minimum for all families was 35%. Reversals in consumption were demonstrated in three families, although successive baselines tended to decrease. No clear differences in effectiveness between prompting and feedback conditions were apparent. The procedures used resulted in considerable dollar savings for the families. 相似文献
318.
319.
Douglas J. Palmer 《Journal of School Psychology》1980,18(2):163-171
In light of recent legislation, school psychologists, administrators, and teachers are required to decide if handicapped pupils' educational needs can be met in regular classrooms. This paper examines information that may be used to derive this placement decision and proposes decision-making guidelines to be considered. 相似文献
320.
S E Palmer N M Bucher 《Journal of experimental psychology. Human perception and performance》1982,8(5):693-708
Five experiments examined the influence of textural stripes on perceived pointing of ambiguous (equilateral) triangles. Reaction times for discriminating specific directions of pointing were measured for plain triangles and for triangles containing stripes that were either coincident with or perpendicular to one of the three possible directions of pointing. Perceptual interference occurred when the stripes biased a direction other than one specified by the discrimination task. The magnitude of the interference decreased (a) as the environmental salience of the specified direction increased and (b) as the spatial frequency of the stripes increased. Further results indicated that this frequency effect is relative to the size of the triangle; it is not determined by absolute (retinal) frequency. Stripes in the ground region surrounding the triangle also produced interference. However, this interference decreased as the region around the triangle was cleared of stripes. The results are discussed in terms of factors that determine the qualitative and quantitative nature of the interference effect, particularly symmetry and spatial frequency. 相似文献