Example image of eyePlorer eyePlorer map for 'Developmental stage theories': Developmental psychology Jean Piaget Michael Commons Model of hierarchical complexity Theory of cognitive development Erik Erikson Erikson's stages of psychosocial development James W. Fowler Stages of faith development Psychosexual development Sigmund Freud Kohlberg's stages of moral development Lawrence Kohlberg Jane Loevinger Loevinger's stages of ego development Margaret Mahler Object relations theory James Marcia Maria Montessori Sensitive periods Abraham Maslow Maslow's hierarchy of needs Clare W. Graves Spiral Dynamics Judith Rich Harris No Two Alike: Human Nature and Human Individuality Chris Cowan Don Beck Positive Adult Development Adult development Intellectual giftedness Identity formation Vision in Product Design E. F. Schumacher Child development Prabhat Ranjan Sarkar Stage Stage of development Edith Jacobson Fetal alcohol syndrome