Identification of Item Preknowledge by the Methods of Information Theory and Combinatorial Optimization

Authored by: Dmitry Belov

Handbook of Quantitative Methods for Detecting Cheating on Tests

Print publication date:  October  2016
Online publication date:  October  2016

Print ISBN: 9781138821804
eBook ISBN: 9781315743097
Adobe ISBN: 9781317588108

10.4324/9781315743097.ch8

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Abstract

Item preknowledge occurs when some examinees (called aberrant examinees) have had prior access to a subset of items (called compromised items) administered on a live test form. As a result, aberrant examinees perform better on compromised items as compared to uncompromised items. When the number of aberrant examinees is large, the corresponding testing program and its stakeholders (universities, companies, government organizations, etc.) are negatively affected because they are given invalid scores for aberrant examinees.

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