Gavin Bremner is Professor of Developmental Psychology at Lancaster University. He has investigated perception and cognition in infancy for more than 30 years, and has published numerous papers and books relating to this topic. His current research interests include infants' perception of object trajectories and infants' intersensory perception.
Theodore D. Wachs is Professor of Psychological Sciences at Purdue University. He is a member of the editorial boards of the International Journal of Behavioral Development and the Journal of Applied Developmental Psychology. His current research focuses on chaotic family environments and infant development; micro-nutrient deficiencies in infancy and cognitive and social-emotional development; and temperament in infancy and childhood.