| A | B |
| infants | Children from birth to one |
| toddlers | Children from one to age three |
| preschoolers | children from three to six year old |
| Maslow | Theorist who used a triangle |
| cephalocaudal | Development occus from head down |
| proximodistal | Development occurs from spinal cord outward |
| Vygotsky | Zone of Proximal Development |
| Piaget | 4 stages including sensorimotor |
| Gardner | Multiiple Intelligences |
| Erikson | 8 stages to life |
| Windows of Opportunity | Specific span of time for development of skills |
| neuron | Specialized brain cells |
| synapses | Links between brain cells |
| Private Speech | When children talk to themselves |
| Development area "P" | physical |
| Development area "S" | social |