The experiment consisted of 20 subjects and 24 passages in a within-subject design.
这个试验包括20个项目，每一个组内项目设计有24段文字。
2
The second within-subject factor is difficulty, included three levels, easy, medium and difficult.
第二个因素是被试内变量，即阅读材料的难度，分为容易、中等、难三个水平。
3
Modeling time-dependent expected mean vectors of QTL genotypes and the structure of the within-subject residual covariance matrix are the essence for functional mapping QTL of dynamic traits.