NDLI: The Diagnostic Utility of Separation Anxiety Disorder Symptoms: An Item Response Theory Analysis

Content Provider	Springer Nature Link
Author	Cooper Vince, Christine E. Emmert Aronson, Benjamin O. Pincus, Donna B. Comer, Jonathan S.
Copyright Year	2013
Abstract	At present, it is not clear whether the current definition of separation anxiety disorder (SAD) is the optimal classification of developmentally inappropriate, severe, and interfering separation anxiety in youth. Much remains to be learned about the relative contributions of individual SAD symptoms for informing diagnosis. Two-parameter logistic Item Response Theory analyses were conducted on the eight core SAD symptoms in an outpatient anxiety sample of treatment-seeking children (N = 359, 59.3 % female, M $_{Age}$ = 11.2) and their parents to determine the diagnostic utility of each of these symptoms. Analyses considered values of item threshold, which characterize the SAD severity level at which each symptom has a 50 % chance of being endorsed, and item discrimination, which characterize how well each symptom distinguishes individuals with higher and lower levels of SAD. Distress related to separation and fear of being alone without major attachment figures showed the strongest discrimination properties and the lowest thresholds for being endorsed. In contrast, worry about harm befalling attachment figures showed the poorest discrimination properties, and nightmares about separation showed the highest threshold for being endorsed. Distress related to separation demonstrated crossing differential item functioning associated with age—at lower separation anxiety levels excessive fear at separation was more likely to be endorsed for children ≥9 years, whereas at higher levels this symptom was more likely to be endorsed by children <9 years. Implications are discussed for optimizing the taxonomy of SAD in youth.
Starting Page	417
Ending Page	428
Page Count	12
File Format	PDF
ISSN	00910627
Journal	Journal of Abnormal Child Psychology
Volume Number	42
Issue Number	3
e-ISSN	15732835
Language	English
Publisher	Springer US
Publisher Date	2013-08-21
Publisher Place	Boston
Access Restriction	Subscribed
Subject Keyword	Separation anxiety disorder Item response theory Symptom Taxonomy Child anxiety Diagnostic and statistical manual Child and School Psychology
Content Type	Text
Resource Type	Article
Subject	Developmental and Educational Psychology Psychiatry and Mental Health

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