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The peripheral vision monitor is an inexpensive device that ensures that visual stimuli can be successfully projected to a given extrafoveal location. The apparatus extinguishes the display lighting system when the observer attempts to view a region intended to be viewed only in peripheral vision, reinstating the illumination when that region is again in the peripheral field. This is achieved by focusing a small spot of light on the scleral-corneal boundary of the observer’s eye and detecting the reflected light with a photocell and circuit. Illumination changes produced at the photocell are used to trigger the display lighting.  相似文献   
134.
Barber  Nigel 《Sex roles》1999,40(5-6):459-471
Despite many speculations, there is no well-supported explanation for cycles of fashion in.women's dress and scholars cannot agree whether fashions reflect societal changes. Generalizing from cycles of bodily attractiveness for women, it was hypothesized that dress styles are reflective of reproductive economics. Using data from three studies of dress fashion extending from 1885-1976, the prediction was tested thatshortskirts (signaling sexual accessibility) would be correlated with low sex ratios (indicating limited marital opportunity for women), with increased economic opportunities for women and with marital instability. Predictions for narrowwaists and low necklines (which signal reproductive value) were opposite. These predictions received strong support indicating that dress styles, like standards of bodily attractiveness may be partly determined by marital economics.  相似文献   
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Lesion studies show that the intermediate medial hyperstriatum ventrale (IMHV), a forebrain visual association area in chicks, is involved in learning and memory for one-trial passive avoidance and imprinting. We examined the effects of IMHV lesions in a one-trial, nongustatory, sickness-conditioned learning task. This task is similar to passive avoidance and imprinting because all three tasks require the chick to remember visual cues in order to respond correctly. However, sickness-conditioned learning differs from imprinting and passive avoidance because it uses sickness as the aversive stimulus and there is a longer conditioned stimulus-unconditioned stimulus interval (30-min delay compared to seconds). Bilateral IMHV lesions given 24 h before training impaired the ability of the chicks to avoid a bead associated with sickness produced by lithium chloride injection, as did pretraining unilateral left or right IMHV lesions. Post-training IMHV lesions given 1 h after training did not impair avoidance of the test bead in the sickness-conditioned learning task. However, lesioned chicks showed generalized avoidance of all test beads. The pretraining lesion results are similar to those found in imprinting and passive avoidance learning; however, the effects of unilateral IMHV lesions differed. Post-training lesion effects are similar to those found in passive avoidance learning. We propose that both left and right IMHV are necessary for sickness-conditioned learning and that post-training IMHV lesions impair the ability of the chick to learn or remember the association between the color of the bead and the aversive consequences of LiCl injection.  相似文献   
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We present a discussion of the literature addressing retention of ethnic minority samples in longitudinal studies. In addition, we describe the retention procedures implemented in the Parents Matter! Program (PMP), a community-based sexual risk reduction intervention for African American families. Finally, the results of PMP's retention strategies are presented.  相似文献   
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This essay describes some of the basic pragmatic tendencies at work in the world of working and then shows how the finite provinces of meaning of theoretical contemplation and literature act against those pragmatic tendencies. This analysis prepares the way to see how the religious province of meaning in a similar but also distinctive way acts back against these pragmatic tendencies. These three finite provinces of meaning make it possible to see the world from another center of orientation than that of the ego agens and its proclivity to bring transcendences within reach, thereby freeing oneself to a degree from the fundamental anxiety and revealing the uniqueness of oneself and others, who are no longer subjected to working’s pragmatic imperatives.  相似文献   
139.
The present study tests the hypothesis that a common ordering mechanism underlies both short-term serial recall of verbal materials and the acquisition of novel long-term lexical representations, using the Hebb repetition effect. In the first experiment, participants recalled visually presented nonsense syllables following a typical Hebb effect learning protocol. Replicating the Hebb repetition effect, we observed improved recall for repeated sequences of syllables. In the second experiment, the same participants performed an auditory lexical decision task, which included nonwords that were constructed from the syllables used in the first experiment. We observed inhibited rejection of nonwords that were composed of the repeated Hebb sequences, compared to nonwords that were built from nonrepeated filler sequences. This suggests that a long-term phonological lexical representation developed during Hebb learning. Accordingly, the relation between immediate serial recall and word learning is made explicit by arguing that the Hebb repetition effect is a laboratory analogue of naturalistic vocabulary acquisition.  相似文献   
140.
The purpose of this study is to analyse the evolution of gender perspective in the context of the Spanish academic Psychology. The last three decades were analysed. In each decade, the study describes the groups and individuals who have contributed to the analysis of gender perspective in Psychology, the sponsoring institutions, and the most frequently used research strategies. Likewise, the study analyses the development of topics and areas in these three decades. The general trend shows that the interpretation of sex/gender has moved away from being considered an individual and internal factor to a more dynamic approach that analyses sex/gender through behavioural practices.  相似文献   
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