Figure 3:
Potential cross-sectional (research question 3: correlation) and longitudinal (research question 4: level-change, simultaneous, and lagged correlated change) relations between brain structure (= Brain) and cognitive ability (= Cog). T = time/measurement occasion. ΔTn+1−Tn represents developmental change between two measurement occasions. Square shapes represent observed measures of a domain at a specific measurement occasion.