Clump displacement as a function of the difference between the log ⟨ t_⋆ ⟩_M of a star-forming complex and the one of the youngest Hα (left) and F275W (right) clump embedded in it. Color indicates the fraction of the star-forming complex that is covered by optical-only emission, and the size of the points is proportional to the radius of the complex. Squares indicate the median position of the 20% most elongated (black) and the 20% least elongated (white) complexes, with error bars showing the interquartile regions of the distributions.