Are psychophysical functions derived from line bisection reliable?
Are psychophysical functions derived from line bisection reliable?
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由线平分得出的心理物理函数可靠吗？
DOI：
10.1017/s1355617703910083
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Mennemeier,Mark
中科院分区：
文献类型：
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作者：
Pierce,ChristopherA;Jewell,George;Mennemeier,Mark
心理物理功能被用来表征被忽视的患者的正常知觉和知觉改变，但这些功能的可靠性很少被检查。本研究对 58 名正常人、年轻人和老年人、男性和女性受试者的线平分数据得出的幂函数进行了为期两周的重测可靠性检验。随着时间的推移，幂函数指数和常数充其量只是中等程度的可靠性。重新测试时指数的大小趋于减小。可靠性系数因年龄和性别而异；它们对于年轻男性非常重要，对于年长男性来说意义不大，对于女性则不重要。种族影响可靠性，因为系数对于白种人受试者显着，但对于非裔美国人受试者则不显着。本研究中的年龄和性别影响与假性忽视文献中的影响相似，它们可能反映了半球在视觉空间处理、震级估计或两者方面的差异。 (JINS, 2003, 9, 72–78.)
Psychophysical functions are used to characterize both normal perception and altered perception among patients with neglect, yet the reliability of these functions is rarely examined. The present study examined two-week, test-retest reliability for power functions derived from line bisection data among 58 normal, young and old, male and female subjects. Power function exponents and constants were, at best, moderately reliable over time. The size of the exponent tended to decrease at retesting. Reliability coefficients varied by age and gender; they were highly significant for young men, marginally significant for older men, and non-significant for women. Race influenced reliability as coefficients were significant for Caucasian subjects but not for African American subjects. Age and gender effects in this study parallel those in the literature on pseudoneglect, and they may reflect hemispheric differences in visuo-spatial processing, magnitude estimation, or both. (JINS, 2003, 9, 72–78.)