ERIC Number: ED150108
Record Type: RIE
Publication Date: 1975
Reference Count: 0
Generalizability of Measures of Teacher Effectiveness and Teaching Process. Beginning Teacher Evaluation Study, Technical Report Series No. 75-4-2.
Shavelson, Richard; Dempsey, Nancy
This report reviews studies of the stability of measure of teacher effectiveness and behavior. In studying teacher effectiveness over short intervals it appears that teaching the same content to similar students yields moderately stable generalizability coefficients over occasions. However, when teachers teach different content to the same or similar students, the measured effectiveness is not very stable over occasions. Studies of the stability of measured effectiveness over long time intervals yields very low to moderate stability coefficients. When the stability of the behavior of teachers was examined, global ratings appeared to show greater teacher stability over occasions than did frequency counts. Nevertheless, in general, there was very little evidence found to indicate that measures of teacher behavior over time are stable. Instability of teacher behavior seemed to be the common finding. Implications for research on teaching are presented. (Author)
Publication Type: Reports - Research
Education Level: N/A
Sponsor: National Inst. of Education (DHEW), Washington, DC.
Authoring Institution: Far West Lab. for Educational Research and Development, San Francisco, CA.