“…That adult methods may also affect children's behavior is indicated in such experimental studies as those of Jack (6), Johnson (9), Keister ( II ), McClure ( I2 ), and Page (IS). Investigations of teacher-child contacts (I,2,3,IO,13,16,17) have not as yet furnished a very adequate picture because of limitations in the categories recorded, incomplete definition of categories and lack of information as to reliability. Some of these studies have been concerned with verbal conta;:ts only, and some with contacts obtained in only one teaching situation.…”