Correlation measures in item analysis
作者:
Colin Cooper,
期刊:
British Journal of Mathematical and Statistical Psychology
(WILEY Available online 1982)
卷期:
Volume 35,
issue 1
页码: 102-105
ISSN:0007-1102
年代: 1982
DOI:10.1111/j.2044-8317.1982.tb00644.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
Henrysson (1963) has criticized the procedure of correlating an item with the sum of the remainingn− 1 items on the grounds that the criterion is a function of the items selected for analysis. Worst case distortions of the point biserial correlations are examined, and it is concluded that for many data sets such effects are likely to be negligible. In such cases it is argued that the corrected coefficients proposed by Henrysson (1963) should be avoided because of their strong assumptions concerning the factorial homogeneity of the test item
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