The development of electroencephalography microstates from infancy into middle childhood and their associations with behavior.

= 383 with at least one time point of usable electroencephalography data, 52.2% male, 78.0% white) in a sample of typically developing children. Further, we examined associations of microstates with child temperament and psychopathology symptoms. Results provide evidence for complex age by sex by microstate number interactions for each of the microstate temporal features (occurrence, duration, coverage, and global explained variance). Moreover, individual differences in microstates were of relevance to temperament traits. Overall, results point to microstates being an informative marker of brain development. (PsycInfo Database Record (c) 2026 APA, all rights reserved).