Diana Baumrind was a clinical and developmental psychologist known for her research on parenting styles, specifically four main types: authoritative, authoritarian, permissive, and uninvolved parenting. Each style has distinct characteristics and effects on children, with authoritative parenting linked to positive outcomes while uninvolved parenting leads to negative consequences. Baumrind's work also touched on corporal punishment, suggesting mild spanking within an authoritative context may not be harmful if controlled for socioeconomic factors, though this view has faced criticism.