The Intraclass Correlation Coefficient as a Measure of Reliability

Psychological Reports - Tập 19 Số 1 - Trang 3-11 - 1966
John J. Bartko1
1National Institute of Mental Health

Tóm tắt

A procedure for estimating the reliability of sets of ratings in terms of the intraclass correlation coefficient is discussed. The procedure is based upon the analysis of variance and the estimation of variance components. For the one-way classification the intraclass correlation coefficient defined as the ratio of variances can be interpreted as a correlation coefficient. Caution, however, is urged in the application of the definition to a two-way model, i.e., one in which between-rater variance is removed. It is maintained that the frequent use of the standard definition of the one-way intraclass correlation coefficient applied to the two-way classification is not a proper procedure if in fact the coefficient is to be interpreted as a correlation coefficient. Definitions for reliability obtained from the two-way models are given which can legitimately be considered correlation coefficients.

Từ khóa


Tài liệu tham khảo

10.1007/BF02288803

Fisher R. A., 1958, Statistical methods for research workers

Guilford J. P., 1954, Psychometric methods

10.1037/13240-000

Haggard E. A., 1958, Intraclass correlation and the analysis of variance

10.1007/BF02289575

10.1080/00220973.1960.11010658

Kempthorne O., 1957, An introduction to genetic statistics

Scheffe H., 1959, The analysis of variance

10.1037/11774-000

Thông tin
Thông tin xuất bản

Psychological Reports

Tập 19 Số 1

3-11

Thông tin tác giả