Fig. 1.
Developmental trajectories of temperament for the overall sample. Linear models are selected for Activity (a), Sadness (b), High-Intensity Pleasure (c), and Low-Intensity Pleasure (d). Quadratic models are selected for Approach (e), Cuddliness (f), Distress to Limitations (g), Fearfulness (h), and Perceptual Sensitivity (i). Neither linear nor quadratic models are selected for Duration of Orientation (j) and Falling Reactivity (k).