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CORRELATES OF UNWARRANTED CONFIDENCE IN RESPONSES TO OBJECTIVE TEST ITEMS
Author(s) -
JACOBS STANLEY S.
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.tb00901.x
Subject(s) - confidence interval , statistics , weighting , test (biology) , psychology , correlation , reliability (semiconductor) , analysis of variance , self confidence , social psychology , mathematics , medicine , paleontology , power (physics) , physics , geometry , quantum mechanics , biology , radiology
Investigated were the effects of several variables on the expression of unwarranted confidence in the accuracy of responses to objective test items. A final examination was administered to 72 subjects under confidence‐weighting instructions with two levels of penalty for incorrect responses. A 2‐way ANOVA revealed no significant main effects or interaction attributable to level of penalty or sex. Although increased penalty level had no effect on confidence‐expression, the test's reliability decreased from .85 to .39, and the correlation between conventional and weighted scores dropped from .88 to .095.