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A DISCRIMINATION INDEX FOR ITEMS IN INSTRUMENTS USING GROUP RESPONSES
Author(s) -
MENNE JOHN W.,
TOLSMA ROBERT J.
Publication year - 1971
Publication title -
journal of educational measurement
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.917
H-Index - 47
eISSN - 1745-3984
pISSN - 0022-0655
DOI - 10.1111/j.1745-3984.1971.tb00899.x
Subject(s) - index (typography) , psychology , statistics , group (periodic table) , measure (data warehouse) , social psychology , mathematics , computer science , data mining , chemistry , organic chemistry , world wide web
Item discrimination for instruments used to measure characteristics by means of group responses is stressed. It is argued that a percentage of the total sum of squares which is due to groups can appropriately be used as an index of item discrimination.