A focal goal of development science in recent years has been to document and understand the psychological processes that underlie inequality toward the goal of promoting equity and justice (e.g., Killen, Rutland, & Yip, 2016). This timely special section on economic inequality broadens the empirical conversation, which has centered mostly on…

Behavioral activation that is associated with incentive-reward motivation increases in adolescence relative to childhood and adulthood. This quadratic developmental pattern is generally supported by behavioral and experimental neuroscience findings. It is suggested that a focus on changes in dopamine neurotransmission is informative in…