Half of them have low discrimination indices and some distractors are functioning inadequately,so the article argues that important tests should be tried out and item analysis carried out beforehand in order to improve the quality of test items.

The experimental condition varies from two aspects in which the target and the distractors are two Chinese characters that are similar in shape and both the prime stimulus and the probe stimulus are including one target and three distractors.

Those studies have nevertheless seldom concerned distractors in MC c.

With supportive testing theories and empirical data, the present essay is aimed to analyze the developing requirement of distractors, which exert much effect on the validity of the grammar-vocabulary multiple-choice test.

Threat assessment model for the jamming target of electronic warfare based on multiple attribute and multiple hierarchy;