Strategy-Selection in Question-Answering.
Technical rept. Jun 83-Jul 85,
CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF PSYCHOLOGY
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There are multiple strategies for answering questions. For example, a statement is sometimes verified using a plausibility process, and sometimes by using a direct-retrieval process. It is claimed that there is a distinct strategy-selection phase and a framework is proposed to account for strategy-selection. Six experiments support the assumptions of the proposed framework The first three experiments show that strategy-selection is under the strategic control of the subjects. These experiments also indicate what contextual variables affect this selection. Experiments 4 and 5 suggest that strategy selection also involves evaluating the question itself while Experiment 6 suggests variables that influence the evaluation of the question. This model is shown to be consistent with processing strategies in domains other than question-answering, viz., dual-task monitoring in divided-attention situations.