Tesearch interests include the development of children's theories about the minds of others; the link between theory of mind, social information processing, and aggressive behavior in young children; gender stereotyping in preschoolers; and the role of phonological and prosodic information in language acquisition.
Research interests include social cognition, individual differences, and intergroup violence. Current research focuses on individual, group, and mass mechanisms of political radicalization, and on dynamics of asymmetric conflict in terrorism and genocide
Research interests include the epidemiology of language delay in toddlers; outcome of early language delay; associations between language and behavior problems in young children; empirically based assessment of children’s problems and competencies; and longitudinal study of emotional/behavioral problems.
Research interests include how individuals regulate their emotional experience and expression especially when they are under stress or interacting with family members.
Research interests include the study of age-related differences in cognitive abilities, gender differences in cognitive abilities, and the study of human memory. Current research topics include the study of changes in memory, attention, and frontal lobe functioning that are associated with the aging process.
Research interests are focused on experimental psychopathology. His other research interests include the neurobiology of learning and memory.
Research interests are in developmental theory, the social and intellectual history of American psychology, and family processes. Current research focuses on power and gender in family belief and interactional systems, and subcultural variations in family values and their relationship to adolescent development.