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Kohlberg's Stages of Moral Development

The Heinz Dilemma, Six Stages, and Gilligan's Critique — A TLDR Primer

You have a psychology exam coming up and Kohlberg's six stages are on it — but the textbook chapter is dense, your notes are scattered, and the levels keep blurring together. This guide cuts straight to what you need to know.

**TLDR: Kohlberg's Stages of Moral Development** walks you through the full theory in plain language: where it came from (Piaget's earlier work on children's rule-following), how the famous Heinz dilemma was used to probe moral reasoning, and exactly what separates Stage 1 from Stage 6. You'll learn why Kohlberg cared about *how* people justify a moral choice — not just what they decide — and why that distinction still matters in psychology today.

The guide covers all three levels — preconventional, conventional, and postconventional — with concrete examples so you can actually classify a response when your instructor puts one in front of you. It also covers the critiques you're most likely to see on a test: Carol Gilligan's ethic of care, the cross-cultural limits of the theory, and the persistent gap between moral reasoning and real behavior.

Designed for high school and early college students taking introductory or AP psychology, this primer is short by design. No padding, no filler — just the core ideas, worked examples, and the context you need to walk into an exam with confidence.

If you need a focused moral reasoning psychology exam review that actually sticks, pick this up and read it in one sitting.

What you'll learn
  • Explain how Kohlberg studied moral reasoning using moral dilemmas like the Heinz dilemma
  • Identify and distinguish all six stages across the preconventional, conventional, and postconventional levels
  • Apply the stages to sample responses and classify reasoning correctly
  • Summarize major critiques of Kohlberg, including Carol Gilligan's ethic of care and cross-cultural objections
  • Connect Kohlberg's theory to Piaget's cognitive development and to real-world moral decisions
What's inside
  1. 1. Where Kohlberg Came From: Piaget, Dilemmas, and the Big Question
    Sets up the historical and methodological background — Piaget's influence, the Heinz dilemma, and why Kohlberg cared about reasoning rather than answers.
  2. 2. Level 1: Preconventional Morality (Stages 1 and 2)
    Covers the earliest level, where moral reasoning is driven by punishment avoidance and self-interested exchange.
  3. 3. Level 2: Conventional Morality (Stages 3 and 4)
    Explains the level most adolescents and adults operate at — reasoning based on social approval and maintaining law and order.
  4. 4. Level 3: Postconventional Morality (Stages 5 and 6)
    Covers the highest and rarest level, where reasoning appeals to social contracts and universal ethical principles.
  5. 5. Critiques: Gilligan, Culture, and What Kohlberg Got Wrong
    Surveys the most exam-relevant critiques, including the ethic of care, cross-cultural limits, and the gap between reasoning and behavior.
  6. 6. Putting It to Work: Classifying Responses and Why It Still Matters
    Shows how to identify stages from sample answers, connects the theory to real moral debates, and previews where moral psychology has gone since.
Published by Solid State Press
Kohlberg's Stages of Moral Development cover
TLDR STUDY GUIDES

Kohlberg's Stages of Moral Development

The Heinz Dilemma, Six Stages, and Gilligan's Critique — A TLDR Primer
Solid State Press

Kohlberg's Stages of Moral Development

The Heinz Dilemma, Six Stages, and Gilligan's Critique — A TLDR Primer

Copyright © 2026 Solid State Press.

Published by Solid State Press.

All rights reserved. No part of this book may be reproduced or transmitted in any form without prior written permission, except for brief quotations in critical reviews and educational use.

Part of the TLDR Study Guides series.

Contents

  1. 1 Where Kohlberg Came From: Piaget, Dilemmas, and the Big Question
  2. 2 Level 1: Preconventional Morality (Stages 1 and 2)
  3. 3 Level 2: Conventional Morality (Stages 3 and 4)
  4. 4 Level 3: Postconventional Morality (Stages 5 and 6)
  5. 5 Critiques: Gilligan, Culture, and What Kohlberg Got Wrong
  6. 6 Putting It to Work: Classifying Responses and Why It Still Matters
Chapter 1

Where Kohlberg Came From: Piaget, Dilemmas, and the Big Question

Lawrence Kohlberg was a graduate student at the University of Chicago in the late 1950s when he asked a question that most psychologists had been treating as settled: not what people think is right or wrong, but why they think so. That distinction — between the answer someone gives and the reasoning behind it — became the foundation of one of the most influential theories in developmental psychology.

Piaget's Blueprint

Kohlberg did not start from scratch. He built directly on the work of Swiss psychologist Jean Piaget, who had already shown in the 1930s that children's moral thinking develops in predictable stages as they grow. Piaget noticed, for instance, that young children judge the naughtiness of an action by the size of its consequences — a child who accidentally breaks fifteen cups is "worse" than one who breaks one cup on purpose — while older children focus on the actor's intention. Piaget called the early rule-following phase heteronomous morality (morality handed down from outside) and the later, more flexible phase autonomous morality (morality constructed from mutual agreement). His key insight was that moral thinking is not just absorbed from adults; it develops through cognitive growth.

Kohlberg found this compelling but incomplete. Piaget had described only two broad stages, mostly focused on children younger than ten. Kohlberg wanted to know what happened after that — through adolescence and into adulthood. He suspected the development of moral reasoning (the mental process by which a person decides what is right and justifies that decision) continued far longer than Piaget had mapped.

The Method: Dilemmas, Not Tests

To study moral reasoning directly, Kohlberg needed a research tool that would reveal how people think, not just what they conclude. He developed a set of structured moral dilemmas — short stories that place two legitimate values in direct conflict, so there is no obvious "right" answer. The most famous of these is the Heinz dilemma, which goes roughly as follows:

About This Book

If you are sitting down with an AP Psychology textbook, enrolled in an intro developmental psychology course, or cramming for a unit exam on ethics and moral development, this guide was written for you. It also works for parents and tutors who need a fast, accurate refresh before helping someone else.

This book is a focused Kohlberg stages of moral development study guide covering everything that shows up on assessments: preconventional, conventional, and postconventional reasoning explained with clear examples; the Heinz dilemma Kohlberg used to build his method, explained for students in plain terms; and the Gilligan critique of Kohlberg — the ethic of care argument — presented as usable study notes. Think of it as a psychology developmental theory quick review that respects your time. A concise overview with no filler.

Read it straight through once, then use the final section to practice classifying moral reasoning responses on your own. That practice step is where the theory clicks into something you can actually apply on a moral reasoning psychology exam.

Keep reading

You've read the first half of Chapter 1. The complete book covers 6 chapters in roughly fifteen pages — readable in one sitting.

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