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Stability of estimated IQ across mood state in patients with bipolar disorder
Author(s) -
Lebowitz Brian K,
Shear Paula K,
Steed Marc A,
Strakowski Stephen M
Publication year - 2006
Publication title -
bipolar disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.285
H-Index - 129
eISSN - 1399-5618
pISSN - 1398-5647
DOI - 10.1111/j.1399-5618.2006.00245.x
Subject(s) - bipolar disorder , mood , psychology , psychiatry , clinical psychology , medicine
Objectives: The goal of this study was to assess the impact of mania symptoms on the stability of the American version of the National Adult Reading Test (ANART), a measure that provides a putative estimate of premorbid intellectual functioning. Methods: The ANART was administered to a sample of 10 inpatients with bipolar disorder who were experiencing an acute episode of mania. During a subsequent follow‐up visit during which these individuals exhibited at most minimal mood symptoms, the ANART was re‐administered. Results: ANART estimated intelligence quotient (IQ) scores during mania and affective stability were assessed in the 10 patients using a paired sample t ‐test. Within‐subject performance across the two mood states did not significantly differ [ t (9) = −1.24, p = 0.25]. Additionally, the greatest individual difference across mood states was only 3.68 points, and the average estimated IQ difference across mood states was 1.66. Conclusions: While the results are preliminary and based on a small sample, the highly consistent scores achieved across mood states in this study suggest that the ANART is a reliable indicator of premorbid IQ.