| Richard I Frederick The test validation summaryRichard I Frederick Department of Psychology, U S Medical Center for Federal Prisoners, Springfield, MO 65807, USA Assessment 16:215-36. 2009 Evaluating constructs represented by symptom validity tests in forensic neuropsychological assessment of traumatic brain injuryRichard I Frederick Department of Psychology, US Medical Center for Federal Prisoners, Springfield, Missouri 65807, USA J Head Trauma Rehabil 24:105-22. 2009 On the interpretation of below-chance responding in forced-choice testsRichard I Frederick Department of Psychology, U S Medical Center for Federal Prisoners, Springfield, Missouri, USA Assessment 14:3-11. 2007
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