Erikson, Piaget & Psychology Theories & Concepts Explained

Replication Crisis in Psychology: Which Famous Studies Failed?

Imagine citing a famous study in your term paper, then finding out that 23 labs tried to reproduce it and came up with almost nothing. That is the everyday reality of the replication crisis in psychology. Since the early 2010s, researchers have been re-running the field’s best-known experiments, and the results have been humbling. Some celebrated findings collapsed. Others survived...

Gender Socialization: Why Kids Police Their Own Gender Rules

Picture two toddlers at the top of the same playground slide. One hears “Careful, sweetie!” The other hears “Look how brave you are!” Neither adult is trying to teach a lesson about gender. Yet this is how gender socialization usually works: thousands of small, mostly unintentional signals that tell children what people like them are supposed to do and feel....

Social Interaction Theory: Why Vygotsky Says Every Skill Appears Twice

Watch a four-year-old work on a jigsaw puzzle with her dad. He keeps asking, “Find the edges first. Does that piece have a flat side?” A few weeks later she’s alone with a new puzzle, muttering, “Edges first… flat side…” Nobody gave her a formal lesson. She borrowed her dad’s voice and made it her own. Lev Vygotsky built a...

Structure of a Neuron: 8 Parts, What Each Does, and the One Most Students Overlook

Reach for your coffee mug, and before your fingers close around the handle, a chain of cells has already carried a message from your brain to your hand. Each of those cells, a neuron, works like a relay runner: one end catches signals, a middle region decides whether to pass them on, and the far end hands them off. The...

Identity Crisis Symptoms: Why Exploration Peaks at 19

In the mid-1940s, Erik Erikson was working with World War II veterans who had come home physically intact but no longer felt like the same people. He gave their experience a name that stuck: identity crisis (Friedman, 1999). Today the phrase gets attached to almost any restless teenager, yet the identity crisis symptoms researchers actually describe are more specific, and...

Moral Development Theories Compared: Which Still Holds Up?

Six-year-old Maya knocks her grandmother’s vase off a shelf, watches it shatter, and tells everyone the cat did it. Is she scared of punishment? Missing a rule nobody taught her? Short on empathy, or just too young to reason about honesty? Your answer depends on which moral development theories you trust. These theories try to explain how people come to...