vygotsky
by Zhen Yi
1. 4. Formal operational
1.1. reflective abilities
1.2. deductive reasoning
1.3. analogical reasoning
1.4. hypothetical reasoning
2. 2. Pre-operational
2.1. usage of symbolic functions
2.2. egocentrism
2.3. centration
2.4. inability to reverse operations
2.5. animism
2.6. transductive reasoning
3. social interactions
3.1. 1. Sensorimotor
3.1.1. Object permanence
3.2. 3. Concrete operational
3.2.1. de-centering
3.2.2. reversibility
3.2.3. seriation
3.2.4. classification
3.2.5. conservation