Journal
INTERNATIONAL JOURNAL OF METHODS IN PSYCHIATRIC RESEARCH
Volume 27, Issue 3, Pages -Publisher
WILEY
DOI: 10.1002/mpr.1723
Keywords
ADHD; cross-informant agreement; latent growth curve modelling
Categories
Funding
- Jacobs Foundation [2010-888]
- Schweizerischer Nationalfonds zur Forderung der Wissenschaftlichen Forschung
- Swiss National Science Foundation [100014_132124 100013_116829]
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Objectives: It is well-known that in cross-sectional analyses, agreement between informants is modest as best when rating attention-deficit/hyperactivity disorder and other disruptive behaviour disorder symptoms. We here aimed to develop recommendations for the use of multi-informant data in the context of longitudinal developmental analyses that examine symptom trajectories over time. Method: Using parallel process modelling, we estimated parent-teacher agreement in inattention and hyperactivity/impulsivity symptom initial levels and slopes across the elementary school years (ages 7, 9, and 11) for a community sample of n = 1,388 youth. We also used these models to examine whether initial levels and slopes differed significantly across informants. Results: Informant agreement was low to moderate and higher for inattention slopes (r = .47) than for hyperactivity/impulsivity slopes (r = .23). Parents and teachers reported opposite developmental trends for inattention with teachers reporting declines and parents reporting increases over time. Parents reported overall higher levels of hyperactivity/impulsivity, but there were no average informant differences in slopes. Conclusion: Of the options available, we recommend specifying separate but correlated factors for different informants in developmental analyses of attention-deficit/hyperactivity disorder. This can be achieved within latent growth curve and growth mixture models.
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