The effects of familiarity, type of verbal response by the E, and practice on a visual search task were investigated by randomly assigning 42 Ss to bi-variant conditions in a discrete search task of 20 trials. Search time for familiar English letters was significantly faster than for unfamiliar Greek letters; there was a significant decrease in search time over trials; and type of verbal response, as well as interactions, produced no significant effects. Relationships with Neisser's (1967) theoretical and empirical work were discussed.
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