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Shaughnessy (1976) suggested that displaced rehearsals may occur in incidental learning when orienting tasks that involve subjective rating scales are used. In the present experiment, evidence supporting this hypothesis was obtained by extending the strategy Wood and Underwood (1967) developed for tracking rehearsals in intentional learning. The study list consisted of the blocked presentation of eight instances of each of five color sense-impression categories. A pronounced within-category primacy effect was found in recall when the orienting task required rating each item’s association to the appropriate color, but not when a different concept was used for rating each item. When orienting tasks are to be used to control the encoding of individual items, investigators should avoid using the same subjective rating scale for several items. |
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