The Psychology of Learning and Motivation, Volume 81, the latest release in this ongoing series, features empirical and theoretical contributions in cognitive and experimental psychology, ranging from classical and instrumental conditioning, to complex learning and problem-solving. Chapters in this new release include Learning in the developing brain: interactions of control and representation systems, Cognitive mechanisms underlying individual differences in language comprehension, Speech processing from the perspective of hearing science and psycholinguistics, Social Episodic Memory, Affective influences of Uncertainty on Episodic Memory Formation, and More than a bump on the head: An overview of the long-term effects of concussion.