Wanda T. Wallace

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To study the beginning stages of expertise, 14 students. who were inexperienced with ballads, heard and recalled a series of 5 ballads over the course of 5 weeks. Compared with their first recall of the first ballad, their first recall of the fifth ballad had one and a half times as many words, two times as many rhyming words, and three times as much line(More)
Introduction: From the late 1960s until now, lunar soil particle size distributions have typically been determined by sieving—sometimes dry, and at other times with fluids such as water or Freon [1-15]. Laser diffraction instruments allow rapid assessment of particle size distribution, and eventually may replace sieve measurements. However, when measuring(More)
The perception of gradually changing luminance distributions was investigated. Luminance changed across the radius of a disk by a linear, quadratic, or cubic function with varying magnitudes. Subjects selected matching luminances for the inner and outer edges of each stimulus. The threshold for reporting that the inner and outer matches were different(More)
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