| Attachment Theory by John Bowlby | Behavior Modification by B.F. Skinner | Cognitive Development by Jean Piaget |
| Ecological Systems Theory by Urie Bronfenbrenner | Eight Stages of Life by Erik Erikson | Five Rules for Children by Jordan Peterson |
| Hands-on Learning by Maria Montessori | Hierarchy of Needs by Abraham Maslow | Moral Development by Lawrence Kohlberg |
| Multiple Intelligences by Howard Gardner | Observation & Imitation by Albert Bandura | Personality Development by Sigmund Freud |
| Social & Cultural Learning by Lev Vygotsky | | |
