a nested repeated measures model occurs in analysis of variance when a particular individual has the same number of subindividuals and each subindividual receives every pair of treatment levels.
当每一个体有相同的子个体,并且每一子个体的处理水平是成对的时候,我们使用套重复测量模型。
also in this aspect we study the sphericity test in two models as an application of the generalized sphericity test, the first model is the nested repeated measures model (nrmm).