The purpose of the study was to determine whether differences in verbal interaction existed between study teachers and first, second, and third year teachers with preservice instruction in Flanders Interaction Analysis Categories (FIAC) and a comparison group without such instruction. (TIAC is a system of 10 categories which classifies verbal…

Flanders' Interaction Analysis, which classifies verbal interaction into 10 categories, was used to compare two groups consisting of seven trainable mentally retarded (TMR) classrooms each. The sample was selected from the extremes of a population of 87 TMR classrooms on the basis of their teachers' high (tending to flexibility and harmony) or low…