TY - JOUR
T1 - Screening for offenders with an intellectual disability: The validity of the Learning Disability Screening Questionnaire
AU - McKenzie, Karen
AU - Michie, Amanda
AU - Murray, Aja Louise
AU - Hales, Charlene
PY - 2012/5
Y1 - 2012/5
N2 - The study assessed the validity of an intellectual disability screening tool, the Learning Disability Screening Questionnaire (LDSQ), in three forensic settings: a community intellectual disability forensic service; a forensic in-patient secure unit and a prison, using data for 94 individuals. A significant positive relationship was found between full scale IQ and LDSQ score, indicating convergent validity. Discriminative validity was indicated by, firstly, a significant difference in the LDSQ scores between those with and without an intellectual disability, with those with a diagnosis of intellectual disability, scoring significantly lower. Secondly, a ROC analysis indicated that the sensitivity and specificity of the LDSQ were both above 80%. The screening tool was found to have lower sensitivity in the forensic populations than was obtained in the original community standardisation sample, but had slightly higher specificity. Limitations and implications of the study are discussed.
AB - The study assessed the validity of an intellectual disability screening tool, the Learning Disability Screening Questionnaire (LDSQ), in three forensic settings: a community intellectual disability forensic service; a forensic in-patient secure unit and a prison, using data for 94 individuals. A significant positive relationship was found between full scale IQ and LDSQ score, indicating convergent validity. Discriminative validity was indicated by, firstly, a significant difference in the LDSQ scores between those with and without an intellectual disability, with those with a diagnosis of intellectual disability, scoring significantly lower. Secondly, a ROC analysis indicated that the sensitivity and specificity of the LDSQ were both above 80%. The screening tool was found to have lower sensitivity in the forensic populations than was obtained in the original community standardisation sample, but had slightly higher specificity. Limitations and implications of the study are discussed.
KW - Screening
KW - intellectual disability
KW - Learning Disability Screening Questionnaire
KW - forensic
U2 - 10.1016/j.ridd.2011.12.006
DO - 10.1016/j.ridd.2011.12.006
M3 - Article
SN - 0891-4222
VL - 33
SP - 791
EP - 795
JO - Research in Developmental Disabilities
JF - Research in Developmental Disabilities
IS - 3
ER -