Psychology Commons^™

Early Development Of Adhd And Odd Symptoms From The Toddler To Preschool Years, Hallie Brown

Doctoral Dissertations

ADHD and ODD are common and impairing externalizing disorders in childhood that are often comorbid. Understanding the development of these symptoms when they first emerge is crucial for better identifying children who are at-risk for later impairment. Parents (N = 273) were recruited via Amazon’s Mechanical Turk to complete surveys about their 2-year-old, followed by surveys every six months for two years. Children’s general pattern of ADHD and ODD symptom growth were examined with latent class analyses. Temperament traits were subsequently added as covariates. Dual group-based trajectories and cross-lagged analyses examined the co-development of these disorders. Results showed 4 distinct …