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141.
The present study examined the effects of UCS intensity and number of postpeak acquisition trials on classical conditioning and extinction of the SCR. A 2 × 3 design was employed in which subjects received either a 1, 2, or 4 mA shock UCS and either two or 16 acquisition trials beyond the peak CR. While conditioning was demonstrated during acquisition, there was no relationship between strength of conditioning and intensity of UCS. The phenomenon of stronger resistance to extinction following fewer acquisition trials (e.g., two past the peak CR) than with many (e.g., 16 past the peak CR) was demonstrated only for the groups that were conditioned with the 4 mA UCS. Resistance to extinction varied positively with UCS intensity, but only for the subjects who received two postpeak acquisition trials. Sixteen trials beyond the peak CR resulted in the UCS intensity having little or no effect on resistance to extinction. 相似文献
142.
Thomas O. Nelson Gene Greene Brian Ronk Gary Hatchett Valerie Igl 《Memory & cognition》1978,6(4):337-341
The present research investigated the effects of multiple images on associative learning. In Experiment 1, subjects formed either a noninteractive image of two words, a single interactive image, a multiple interactive image consisting of multiple copies of the same image, or a multiple interactive image consisting of different images. In Experiment 2, the different multiple images were formed across trials instead of simultaneously during the same trial. Both experiments showed that, although interactive images are superior to noninteractive images, there is no reliable facilitation from multiple images as compared with single images. The results were discussed in terms of the variable-encoding hypothesis and previous findings that multiple retrieval paths facilitate verbal learning. 相似文献
143.
Susan E. Fahrbach Darrell Moore Elizabeth A. Capaldi Sarah M. Farris Gene E. Robinson 《Learning & memory (Cold Spring Harbor, N.Y.)》1998,5(1):115-123
Worker honeybees (Apis mellifera) were reared in social isolation in complete darkness to assess the effects of experience on growth of the neuropil of the mushroom bodies (MBs) during adult life. Comparison of the volume of the MBs of 1-day-old and 7-day-old bees showed that a significant increase in volume in the MB neuropil occurred during the first week of life in bees reared under these highly deprived conditions. All regions of the MB neuropil experienced a significant increase in volume with the exception of the basal ring. Measurement of titers of juvenile hormone (JH) in a subset of bees indicated that, as in previous studies, these rearing conditions induced in some bees the endocrine state of high JH associated with foraging, but there was no correlation between JH titer and volume of MB neuropil. Treatment of another subset of dark-reared bees with the JH analog, methoprene, also had no effect of the growth of the MB neuropil. These results demonstrate that there is a phase of MB neuropil growth early in the adult life of bees that occurs independent of light or any form of social interaction. Together with previous findings showing that an increase in MB neuropil volume begins around the time that orientation flights occur and then continues throughout the phase of life devoted to foraging, these results suggest that growth of the MB neuropil in adult bees may have both experience-expectant and experience-dependent components. 相似文献
144.
Gene V Glass 《Psychometrika》1966,31(4):545-561
The relationship between the factor pattern,F, derived from fallible (containing measurement error) observations on variables and the factor pattern,F*, derived from infallible observations on variables is investigated. A widely believed relationship betweenF andF*, viz.,F*=AF whereA is a diagonal matrix containing the inverses of the square roots of the reliabilities of the variables, is shown to be false for several factor analytic techniques. Under suitable assumptions, it is shown that for Kaiser and Caffrey's alpha factor analysisF* andF are related byF*=AF. Empirical examples for which the corresponding elements ofF* andAF are equal to two decimal places are presented. The implications of the equality ofF* andAF for alpha factor analysis are discussed.I wish to acknowledge the generous assistance of Drs. Chester W. Harris and Henry F. Kaiser in the execution of the research reported in this paper. 相似文献
145.
David N. Aspy Cheryl B. Aspy Gene Russel Mack Wedel 《Journal of counseling and development : JCD》2000,78(1):29-37
In the May/June 1997 issue of the Journal of Counseling & Development, Eugene Kelly contended that the counseling profession should integrate its theories to combine the strengths of both the humanistic and the technical orientations in the field. Kelly's recommendation is supported by previous efforts that have already advanced the field. Human Technology (HT) as devised by Robert Carkhuff integrated nondirective, psychodynamic, and behavioristic counseling modes. Extensions of HT also demonstrate the continuing growth potential in the integrative strategy. In this article, the authors discuss those endeavors to emphasize the potential contributions to be attained by integrating humanistic and technical orientations. 相似文献
146.
Natsuaki MN Ge X Brody GH Simons RL Gibbons FX Cutrona CE 《American journal of community psychology》2007,39(1-2):163-176
The prospective effects of observed neighborhood disorder, stressful life events, and parents’ engagement in inductive reasoning
on adolescents’ depressive symptoms were examined using data collected from 777 African American families. Multilevel analyses
revealed that stressful life events experienced at age 11 predicted depressive symptoms at age 13. Furthermore, a significant
interaction between neighborhood disorder and parents’ engagement in inductive reasoning was found, indicating that parental
use of inductive reasoning was a protective factor for depressive symptoms particularly for youths living in highly disordered
neighborhoods. The importance of examining correlates of depressive symptoms from a contextual framework, focusing on individuals,
families, and neighborhood contexts, is emphasized. 相似文献
147.
148.
149.
Gene Ouellette 《Journal of experimental child psychology》2010,107(1):50-58
This study investigated the relevance of type of practice and presence of semantic representation for orthographic learning in learning to spell. A total of 36 students in Grade 2 (mean age = 7 years 10 months) were exposed to 10 novel nonwords, 5 of which were paired with semantic information. Half of the participants practiced reading these new items, whereas the others spelled them. The students were then tested 1 and 7 days later on a dictation task. Results revealed a significant main effect of practice type favoring spelling practice and a main effect of the teaching condition, where taught items paired with semantic information were spelled correctly more often than words presented without semantic support. There was no effect of testing time, with learned words being retained well over the 1-week delay, nor were there any significant interactions. The findings support the contention that spelling offers an excellent milieu for orthographic learning to occur. Furthermore, semantics are proposed as a relevant factor in learning to spell, supporting the view that orthographic learning involves the integration of phonological, orthographic, and semantic representations. 相似文献
150.
Output monitoring refers to memory for one’s previously completed actions. In the context of prospective memory (PM) (e.g., remembering to take medication), failures of output monitoring can result in repetitions and omissions of planned actions (e.g., over- or under-medication). To be successful in output monitoring paradigms, participants must flexibly control attention to detect PM cues as well as engage controlled retrieval of previous actions whenever a particular cue is encountered. The current study examined individual differences in output monitoring abilities in a group of younger adults differing in attention control (AC) and episodic memory (EM) abilities. The results showed that AC ability uniquely predicted successful cue detection on the first presentation, whereas EM ability uniquely predicted successful output monitoring on the second presentation. The current study highlights the importance of examining external correlates of PM abilities and contributes to the growing body of research on individual differences in PM. 相似文献