Familiarity failed to enhance perceptibility of patterns (Same-Different thresholds) but did facilitate naming them (Identification thresholds). These results add to the recent accumulation of evidence showing that experience does not modify (and certainly does not create) visual impressions which are present, even in humans, from the first day's exposure to the visual world. It is by means of experience, however, that such an organism eventually comes to terms with these impressions.
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