mixed design

Using 2 ( reading the word text and reading printed text)× 2 ( short and long article) mixed design, this study examined the influence of the way of text presentation on reading efficiency under the condition of limited reading time.

本研究采用2（阅读word文本与阅读打印文本）×2（短文与长文）混合设计，考察在限定阅读时间条件下文本呈现方式对阅读效果的影响。

In experiment ⅱ, we employed a mixed design, 2 ( learning materials difficulty: easy vs. complex)× 2 ( presentation mode: single channel vs. dual channel), and presentation mode is between-subject design, the learning materials difficulty is within-subject design.

实验二采用2（学习材料难度：容易vs复杂）×2（呈现方式：单通道vs双通道）的混合设计，呈现方式为被试间设计，材料难易为被试内设计。

The study used a 2 × 2 × 4 mixed design to analysis the behavior of students of different grades in solving comparison problems through the Model 504 Eye Movement System made by the American Applied Science Laboratory.

采用2×2×4三因素混合实验设计，使用美国应用科学实验室（ASL）生产的504型台式眼动仪，对不同年级学生解比较应用题过程中的解题指标和眼动指标进行分析。