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The visual preferences of human infants for faces that varied in their attractiveness and in their symmetry about the midline were explored. The aim was to establish whether infants' visual preference for attractive faces may be mediated by the vertical symmetry of the face. Chimeric faces, made from photographs of attractive and unattractive female faces,(More)
  • C A Samuels
  • 1985
Thirty-two 3-month-old infants participated in two experiments showing color videotapes of facial stimuli in a paired comparison format. In Experiment 1, the experimenter, serving as the stimulus, looked either directly at the infant or averted his gaze to the side; the face was presented either still or in motion. Eye contact opportunity had no effect(More)
This working paper presents the findings of research on the relationship between price and quality in consumer service industries in the Washington, D.C. area. The study relies primarily upon consumer ratings of service provider quality and other data published in Washington Consumer's Checkbook Magazine. The data base includes nineteen service industries(More)
The most common electron microscopic technique for obtaining information on size distributions of uncollapsed membrane vesicles is based on the method of van Venetie (1980). This technique involves the sizing of only those vesicles that were freeze fractured at their equatorial planes. As a result, only a small number of images can be used to generate size(More)
1 Trade liberalization plays a positive role in increasing the level of income (static effect) as well as increasing the growth rate of income (dynamic effect). There is an extensive literature for both types of effects. With respect to the static effect see for example the surveys by Feenstra (1992) and the USITC (1999). With respect to the dynamic effect(More)
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