| A | B |
| Sigmund Freud | Stages of Psychosexual Development |
| Mary Ainsworth | Strange Situation Experiment (attachment) |
| Konrad Lorenz | attachment (imprinting) of baby geese experiment |
| Harry Harlow | artificial mothers experiment on rhesus monkeys |
| Albert Bandura | Bobo doll experiment on observational learning |
| Diane Baumrind | four parenting styles |
| Lev Vygotsky | zone of proximal development |
| Jean Piaget | Four Stages of Cognitive Development |
| James Marcia | Stages of Identity |
| Erik Erikson | Eight Stages of Psychosocial Development |
| Lawrence Kohlberg | Three Stages of Moral Development |
| Carol Gilligan | morality difference by gender |