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291.
M Sloane R Blake 《Journal of experimental psychology. Human perception and performance》1984,10(3):406-412
Psychophysical techniques were used to examine how subpopulations of visual neurons varying in their ocular dominance interacted in determining performance on a visual task. Using an asymmetric alternating adaptation of the left and right eyes, we manipulated the sensitivity of monocularly driven neurons while keeping the sensitivity of binocularly driven neurons constant. Relative threshold elevations were measured in the left eye, right eye, and both eyes of five observers following different ratios of alternating adaptation. It was found that whereas monocularly measured aftereffects varied monotonically as a function of the adaptation duration of the measured eye, the magnitude of the binocularly measured aftereffect remained constant regardless of how the adaptation was divided between the two eyes. This suggests that neurons differing in their ocular dominance pool their activity in determining sensitivity to a test target. 相似文献
292.
D. H. Westendorf R. Randolph Blake Robert Fox 《Attention, perception & psychophysics》1972,12(5):445-448
To determine if binocular summation occurs when increment flashes are of equal energy (Bloch’s law) but unequal in luminance-duration parameters, three Ss made temporal forced-choice judgments: (1) monocularly, (2) binocularly when the flashes to each eye were identical, (3) binocularly when the flashes to each eye were of equal energy but different in terms of their luminance and duration parameters, and (4) binocularly when flashes to each eye were separated by 100 msec. Binocular detection rates were consistently superior to monocular detection rates. Similarity in performance between Conditions 2 and 3 indicates that the binocular visual system responds only to the total energy of each monocular flash. The data from two Ss reveal that binocular performance was greater than that predicted on the basis of probability summation. 相似文献
293.
This paper reviews experiments that bear on the issue of binocular summation, the superiority of binocular over monocular viewing on various visual tasks covering studies published since the appearance of a previous review of this literature by Blake and Fox (1973). The experiments are grouped into three main categories—those that deal with the specificity of binocular summation (i.e., the extent to which inputs to the two eyes must coincide spatially and temporally), those that study binocular summation on suprathreshold tasks, and those that correlate binocular summation with other aspects of binocular function. The last section of the paper critically reviews several models of binocular summation. 相似文献
294.
The present article critically examines research on the use of antidepressants in treating agoraphobia. A number of studies have shown certain classes of antidepressant medication, namely tricyclic antidepressants and MAO inhibitors, to have beneficial effects on certain aspects of the agoraphobic syndrome. However, these studies must be interpreted with caution in light of two major methodological shortcomings, i.e. sole reliance on paper and pencil outcome indices and the confounding of the pharmacological effects of the drug with exposure to feared situations. Recent research, aimed at correcting for these methodological problems, seriously question the efficacy of antidepressant pharmacotherapy by itself as a treatment for agoraphobia. Moreover, it is argued that the disadvantages of drug treatments namely agoraphobics' reluctance to take medication, physical side effects and relapse upon withdrawal of the medication, caution against their routine use in clinical practice. 相似文献
295.
WINDSORT: A fully automated technique for collecting sort data for multidimensional scaling analysis
WINDSORT is a microcomputer program that uses an automated sorting procedure to collect the preprocess proximity data commonly analyzed using multidimensional scaling. The traditional manual sorting task is less tedious, more enjoyable, and far easier for subjects to perform than the tasks that are used in alternative data-collection techniques. However, complete automation of the sorting task has not previously been fully successful WINDSORT uses a form of the hierarchical sorting technique which is reputed to yield richer data than single-sort techniques A maximum of 45 stimuli can be scaled using WINDSORT. Resulting output includes dissimilarity matrices which are ready to analyze using MDS. 相似文献
296.
297.
Blake E. Ashforth Alan M. Saks Raymond T. Lee 《International Journal of Selection & Assessment》1997,5(4):200-214
One of the most theoretically developed models of organizational socialization is Van Maanen and Schein's (1979) typology of six tactics. Jones' (1986) operationalization of these tactics has been used in most survey studies of the Van Maanen and Schein model. However, questions remain concerning the dimensionality of the operationalization. Self-report data from business school graduates after 4 months (n = 295) and 10 months (n = 222) on the job indicate that: (1) a 6-factor model better approximates the covariance matrix of the socialization items than do competing 1- and 3-factor models, (2) the 6-factor model better predicts certain work adjustment variables than the 3-factor model, and the 3-factor model better predicts certain variables than the 1-factor model, and (3) the collective, formal, sequential, fixed, serial, and investiture tactics are positively interrelated, suggesting a structured program of early work experience. 相似文献
298.
299.
Gerritsen C Frischen A Blake A Smilek D Eastwood JD 《Perception & psychophysics》2008,70(6):1047-1059
A series of three visual search tasks revealed more efficient search for hostile than for peaceful faces among neutral face distractors. Given that this effect has been observed inconsistently in prior literature, meta-analytic methods were employed for evaluating data across three experiments in order to develop a more valid estimate of the potentially small effect size. Furthermore, in the present experiments, different emotional meanings were conditioned to identical faces across observers, thus eliminating confounds between the physical characteristics and the emotional valences of the face stimuli. On the basis of the present findings, we argue that the visual system is capable of determining a face's emotional valence before the face becomes the focus of attention, and that emotional valence can be used by the visual system to determine subsequent attention allocation. However, meta-analytic results indicate that emotional valence makes a relatively small contribution to search efficiency in the present search context. 相似文献
300.
Blake L Jones D Phillip Scoville E Jeffrey Hill Geniel Childs Joan M Leishman Kathryn S Nally 《Journal of family psychology》2008,22(5):774-783
This study examined the relationship of 2 types of workplace flexibility to work-family fit and work, personal, and marriage-family outcomes using data (N = 1,601) representative of employed persons in Singapore. We hypothesized that perceived and used workplace flexibility would be positively related to the study variables. Results derived from structural equation modeling revealed that perceived flexibility predicted work-family fit; however, used flexibility did not. Work-family fit related positively to each work, personal, and marriage-family outcome; however, workplace flexibility only predicted work and personal outcomes. Findings suggest work-family fit may be an important facilitating factor in the interface between work and family life, relating directly to marital satisfaction and satisfaction in other family relationships. Implications of these findings are discussed. 相似文献