Developmental Psychology Archives - Page 11 of 14 - The Psychology Notes Headquarters

Conservation in Piaget’s Theory: 5 Tasks, Stages & Why Children Fail

Conservation in psychology is the understanding that quantity stays constant even when the appearance of an object changes. It’s one of six cognitive abilities children develop during Piaget’s concrete operational stage (ages 7–11) — the period when logical thinking first takes hold. Before conservation develops, children are routinely misled by how things look: a taller glass seems to hold more...

Concrete Operational Stage: Examples, Characteristics & Key Skills (Ages 7–11)

The concrete operational stage is the third of Jean Piaget’s four stages of cognitive development, spanning roughly ages 7 to 11. It marks one of the most significant transitions in childhood cognition: children move from intuitive, appearance-driven thinking to genuinely logical reasoning. The catch is that this logic is tethered to the physical world. Children reason well about things they...

Inner Speech: Vygotsky’s Theory of Thought and Language Development

Inner speech is the silent, internal dialogue that runs through your mind as you plan, reason, and regulate your emotions — and according to Lev Vygotsky, it doesn’t emerge spontaneously. It develops through a systematic process rooted in social interaction, gradually moving inward through childhood. In his landmark work on lev vygotsky thought and language, Vygotsky argued that language doesn’t...

Harlow’s Monkey Experiment: Why Baby Monkeys Chose Touch Over Food

Harlow’s monkey experiment was a landmark series of studies conducted by psychologist Harry Harlow in the 1950s that proved infant attachment is driven by contact comfort—the need for physical touch—not by feeding. Baby rhesus monkeys given a choice between a wire surrogate that provided milk and a soft cloth surrogate that provided none spent up to 18 hours a day...

Superego Development: Freud’s Conscience, Guilt, and the Ego Ideal

Superego development is the process by which children internalize moral standards from their environment and build a genuine internal conscience — transforming rules once enforced by others into a moral voice that regulates behavior from within. Freud argued this process begins between ages 3 and 6 through the resolution of Oedipal conflict and identification with the same-sex parent, the defining...

Identity vs Role Confusion: Erikson’s Stage 5, Fidelity, and Real-Life Examples

Identity vs role confusion is the fifth stage of Erik Erikson’s theory of psychosocial development, occurring during adolescence between ages 12 and 18. During this stage, teenagers explore their independence and develop a sense of self. Success in this stage leads to the virtue of fidelity—the ability to commit to others and accept others despite ideological differences—while failure results in...

Category: Developmental Psychology