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Contextual Explanations of Local Dependence in Item Clusters in a Large Scale Hands‐On Science Performance Assessment
Author(s) -
Ferrara Steven,
Huynh Huynh,
Michaels Hillary
Publication year - 1999
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.1745-3984.1999.tb00550.x
Subject(s) - correlation , psychology , item response theory , scale (ratio) , cluster (spacecraft) , cognitive psychology , psychometrics , developmental psychology , computer science , mathematics , geography , cartography , geometry , programming language
This study provides hypothesized explanations for local item dependence (LID) in a large scale hands‐on science performance assessment. Items within multi‐step item clusters were classified as low or high in LID using contextual analysis procedures described in this and other studies. LID was identified statistically using the average within cluster (AWC) correlation procedure described in previous studies. Levels of LID identified in contextual analyses were compared to levels of LlD identified in correlation analyses. Consistent with other studies, items that appear to elicit locally dependent responses require examinees to answer and explain their answer or to use given or generated information to respond