Abstract
Studying the heuristic factors in choosing positive diagnostic and negative diagnostic Test. 592 Xinghai Conservatory of Music students participated in 4 experiments. Experiment 1 tested the tendency on choosing positive, negative, diagnostic and nondiagnostic questions. Experiment 2 focused the same tendency on double optional questions. Experiment 3 explored the improvement of negative diagnostic test when offered falsify sample. Experiment 4 researched on the same improvement when the difficulty of positive test was enhanced. The results showed that (1) participants were significantly more likely to prefer positive tests over negative tests, and prefer diagnostic tests over nondiagnostic test. (2) participants tended to choose negative test question between the positive nondiagnostic and negative diagnostic test question. (3) offering falsify sample or enhancing positive test complexity promoted negative diagnostic test. The result consisted with the predicting by mental model theory. A conversion-mechanism provided a complemented explanation for the model theory.
| Keywords: | selection task; mental model; heuristic factors; conversion-mechanism |
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