Campbell V A, Bailey C J
Am J Ment Defic. 1984 Jul;89(1):44-9.
Research on differential effects of residential environments has been hampered by the lack of a formal classification scheme for placement types. Two systematic approaches (dimensional and typological) were used to develop classification systems. Each approach was evaluated on criteria applicable to general classification schemes and residential environments for retarded persons. A third, nested system was derived that satisfied rules for development and evaluative criteria.
由于缺乏针对安置类型的正式分类方案，对居住环境差异影响的研究受到了阻碍。我们采用了两种系统方法（维度法和类型法）来制定分类系统。每种方法都依据适用于一般分类方案和智障人士居住环境的标准进行了评估。由此得出了一个满足发展规则和评估标准的第三种嵌套系统。
