Question (Milestone/Concept)
Answer (Stage, Model, Age Range, & Source)
Mastery of conservation (mass, weight, volume)
Stage: Concrete Operations | Model: Piaget | Age: 7 to 11 years (PB | 6)
The “Oedipus Complex” or “Electra Complex”
Stage: Phallic Stage | Model: Freud | Age: 3 to 5 years (PB | 26-27)
Development of “Object Permanence” (Object Constancy)
Stage: Sensorimotor Stage | Model: Piaget | Age: Birth to 2 years (PB | 31)
Crisis of “Integrity vs. Despair”
Stage: 8th Psychosocial Stage | Model: Erikson | Age: 60 years to death (PB | 13)
The emergence of abstract thinking and deduction
Stage: Formal Operations | Model: Piaget | Age: 11 to 15 years (PB | 25)
The practice of “Toilet Training” as a central focus
Stage: Anal Stage | Model: Freud | Age: 1 to 3 years (PB | 53)
The “Midlife Crisis” for men
Stage: Generativity vs. Stagnation | Model: Erikson | Age: 35 to 45 years (PB | 17)
The peak of “Stranger Anxiety”
Stage: Sensorimotor Stage | Model: Piaget | Age: 8 months (PB | 28)
Mastery of “Reversibility” (undoing an action in the mind)
Stage: Concrete Operations | Model: Piaget | Age: 7 to 11 years (PB | 9)
The “Trust vs. Mistrust” developmental crisis
Stage: 1st Psychosocial Stage | Model: Erikson | Age: Birth to 1 year (PB | 12)
The most prominent period for “Egocentrism”
Stage: Preoperations | Model: Piaget | Age: 2 to 7 years (PB | 9)
The “Intimacy vs. Isolation” crisis
Stage: 6th Psychosocial Stage | Model: Erikson | Age: 23 to 34 years (PB | 18)
“Centration” (focusing on one feature of an object)
Stage: Preoperations | Model: Piaget | Age: 2 to 7 years (PB | 34)
The “Oral Character” (alcoholism, smoking, overeating)
Stage: Oral Stage | Model: Freud | Age: Birth to 1 year (PB | 53)
The peak of peer conformity
Stage: Adolescence | Model: General | Age: Early teens (PB | 19)
Use of “Symbolic Schema” (using a box as a spaceship)
Stage: Preoperations | Model: Piaget | Age: 2 to 7 years (PB | 35)
“Industry vs. Inferiority” (focus on school/productivity)
Stage: 4th Psychosocial Stage | Model: Erikson | Age: 6 to 11 years (PB | 5)
“Animism” (attributing life to inanimate objects)
Stage: Preoperations | Model: Piaget | Age: 2 to 7 years (PB | 39)
The “Punishment and Obedience” orientation
Stage: Stage 1, Preconventional | Model: Kohlberg | Age: Childhood (PB | 15)
The “Naive Hedonism” orientation (reward/favor exchange)
Stage: Stage 2, Preconventional | Model: Kohlberg | Age: Childhood (PB | 15)
The “Good Boy/Good Girl” orientation (pleasing others)
Stage: Stage 3, Conventional | Model: Kohlberg | Age: Adolescence to Adult (PB | 14)
The “Authority, Law, and Order” orientation
Stage: Stage 4, Conventional | Model: Kohlberg | Age: Adolescence to Adult (PB | 26)
“Identity vs. Role Confusion” crisis
Stage: 5th Psychosocial Stage | Model: Erikson | Age: 12 to 18 years (PB | 11)