IQ trajectories in autistic children through preadolescence.

ABSTRACT:

Background

We extended our study of trajectories of intellectual development of autistic individuals in early (mean age 3 years; T1), and middle childhood (mean age 5 years, 7 months; T2) into later middle childhood/preadolescence (mean age 11 years, 6 months; T3) in the longitudinal Autism Phenome Project cohort. Participants included 373 autistic children (115 females).

Methods

Multivariate latent class growth analysis was used to identify distinct IQ trajectory subgroups. Baseline and developmental course group differences and predictors of trajectory membership were assessed using linear mixed effects models with repeated measures with pairwise testing, multinomial logistic regression models, and sensitivity analyses.

Results

We isolated three IQ trajectories betw

SUBMITTER: Solomon M 

PROVIDER: S-EPMC10241474 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature