Forest J J
Department of Psychology, University of Manitoba, Winnipeg, Canada.
Psychol Rep. 1998 Dec;83(3 Pt 2):1147-52. doi: 10.2466/pr0.1998.83.3f.1147.
40 books on self-help psychology were examined in a 2 x 2 multivariate analysis of covariance design for the number of case illustrations, number of lines of text about case illustrations, and average number of lines per case illustration. The covariate was pages per book and the independent variables were status of the book (bestseller or nonbestseller) and decade of publication (1970-1979 or 1980-1989). It was hypothesized that bestsellers would contain more case illustrations and lines of text describing case illustrations than nonbestsellers. Case illustrations per book in nonbestsellers increased significantly in number over the two decades when compared to bestsellers.
在一项2×2协方差多元分析设计中，对40本自助心理学书籍进行了研究，涉及案例插图数量、关于案例插图的文本行数以及每个案例插图的平均行数。协变量是每本书的页数，自变量是书籍的状态（畅销书或非畅销书）和出版年代（1970 - 1979年或1980 - 1989年）。研究假设是，与非畅销书相比，畅销书将包含更多的案例插图以及描述案例插图的文本行数。与畅销书相比，非畅销书每本书的案例插图数量在这二十年中显著增加。
