如果实验出现了自变量的混淆，直接受到影响的研究效度是

A.Borst. G. , Kosslyn, S. M. , & Dennis, M. (2006). Different cognitive processes in two image-scanning paradigm. Memory & Cognition. 34(3): 475-490.
B.Borst. G. , Kosslyn, S. M. , & Dennis, M. (2006). Different cognitive processes in two image-scanning paradigm. Memory & Cognition, 34(3), 475-490.
C.Borst, G. , Kosslyn, S. M. , & Dennis, M. Different cognitive processes in two images-canning paradigm. Memory & Cognition, 2006, 34.3, 475-490.
D.Borst, G. , Kosslyn, S. M. , & Dennis, M. Different cognitive processes in two image-scanning paradigm. Memory & Cognition, 2006, 34(3): 475-490.

A.首因效应
B.倒摄作用
C.前摄作用
D.近因效应