Revised Thelen's (1954) Group Emotionality Rating System, developing new criteria and assessment procedures. A reliability study of 4,343 verbal statements from 6 different Norwegian groups revealed an overall agreement of .77, with the emotionality subcategories ranging from .57 to .67. Discusses validity of the emotionality categories according…

During the 60's, systems for the observation of classroom behavior have become an important area of educational research. Many new systems have been devised both for the evaluation of teaching techniques and for basic research into teaching processes. In the development of such systems the investigator must determine what behaviors are to be…