A Study On Eye Movement In College Students' Feature Induction When Categorization Was Uncertain

The eye movements of 30 college students were recorded during they were doing feature induction when categorization was uncertain.This study included two experiments to explore whether or not categorization influenced feature induction. In other words, was prediction based on category or based on feature association?Experiment 1 is a pre-experiment, which investigated preliminarily whether prediction was based on category or based on feature association on the competition between the feature of the target category and the prediction feature based on feature association.On the basis of Experiment 1, Experiment 2 used eye movement technique to verify the results of Experiment 1. It investigated whether the competitive feature based on feature association influenced people's induction by controlling the number of the prediction feature. It fixed category uncertainty and representativeness of target feature. Experiment 2 included two sub-experiments: Experiment 2a and Experiment 2b. The two sub-experiments used the same pictures . The difference between Ex 2a and Ex 2b is whether students should make an initial categorization judgment before they were doing feature induction or not.The results from Experiment 1 and Experiment 2 showed, when subjects predict feature directly, the induction was based on feature association. But when they should make an initial categorization judgment, the induction was based on category.