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Critical Thinking Course
More than 2 million students worldwide

Critical Thinking Course

Stop accepting weak arguments, flawed data, and gut-driven decisions at face value. This Critical Thinking Course gives you a rigorous, practical toolkit to analyse problems, evaluate evidence, and reason with precision. Whether you are navigating complex decisions at work or cutting through noise in daily life, these skills will sharpen every judgement you make.

Dedika for businesses

What you'll learn:

In this course, you will build a complete critical thinking skill set from the ground up. You will learn how to identify logical fallacies, dismantle cognitive biases, and evaluate sources with professional rigour. You will master structured frameworks for problem framing, root cause analysis, and decision-making under uncertainty. The course also covers systems thinking, Socratic questioning, ethical reasoning, and digital information literacy. By the end, you will think more clearly, argue more effectively, and make better decisions in every area of your life.

How you study in practice Critical Thinking Course

How you practise Critical Thinking Course

For businesses looking to train their team

With Dedika for businesses, the course includes exercises and examples tailored to your own business and the way your company needs.

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Course content

8 Chapters • 39 LessonsDuration between 4 and 360 hours (you decide)

Chapter 1See details

Foundations of Critical Thinking

  • Lesson 1 • The Thinking Process Unpacked

    Breaks down cognition into perception, interpretation, analysis, and judgment. Provides a process map learners will apply throughout the course.

  • Lesson 2 • Defining Critical Thinking

    Clarifies the precise meaning of critical thinking versus intuition and opinion. Sets the conceptual baseline for the entire course.

  • Lesson 3 • Why Critical Thinking Matters

    Examines real-world consequences of poor reasoning in professional and personal contexts. Motivates learners by connecting skills to tangible outcomes.

  • Lesson 4 • Standards of Good Reasoning

    Introduces universal intellectual standards: clarity, accuracy, precision, relevance, and fairness. These standards serve as evaluation criteria in every later chapter.

Chapter 2See details

Logic and Argument Structure

  • Lesson 1 • Anatomy of an Argument

    Defines premises, conclusions, and inference links that form every argument. Grounds learners in the vocabulary needed for all argument analysis.

  • Lesson 2 • Inductive Reasoning

    Explores probabilistic inference, generalization, and analogical reasoning. Connects to real-world decision-making where certainty is rarely available.

  • Lesson 3 • Deductive Reasoning

    Covers validity, soundness, and the mechanics of deductive inference. Learners practice testing whether conclusions necessarily follow from premises.

  • Lesson 4 • Abductive Reasoning

    Introduces inference to the best explanation as a third reasoning mode. Prepares learners to diagnose problems and generate hypotheses systematically.

  • Lesson 5 • Constructing Clear Arguments

    Teaches learners to build well-structured, persuasive arguments from scratch. Bridges logic theory to practical communication and advocacy.

Chapter 3See details

Identifying and Avoiding Fallacies

  • Lesson 1 • Fallacies of Presumption and Ambiguity

    Addresses begging the question, false dichotomy, equivocation, and amphiboly. Sharpens sensitivity to hidden assumptions and linguistic traps.

  • Lesson 2 • What Makes Reasoning Fallacious

    Distinguishes formal fallacies from informal ones and explains why both mislead. Establishes a diagnostic mindset for the rest of the chapter.

  • Lesson 3 • Fallacies of Relevance

    Covers ad hominem, straw man, appeal to authority, and related errors. Learners practice spotting irrelevant premises in arguments and debates.

  • Lesson 4 • Responding to Fallacious Arguments

    Provides strategies for naming, neutralising, and redirecting fallacious reasoning in real conversations. Builds practical assertiveness alongside analytical skill.

  • Lesson 5 • Fallacies of Weak Induction

    Examines hasty generalization, false cause, slippery slope, and analogical errors. Connects to inductive reasoning skills built in the previous chapter.

Chapter 4See details

Cognitive Biases and Mental Models

  • Lesson 1 • How Biases Form and Persist

    Explains the cognitive and evolutionary origins of bias and why they resist correction. Frames bias awareness as the first step toward better judgment.

  • Lesson 2 • Debiasing Strategies

    Teaches pre-mortems, consider-the-opposite, and structured decision protocols. Equips learners with actionable routines to reduce bias in real decisions.

  • Lesson 3 • Social and Group Biases

    Examines in-group favouritism, groupthink, and social proof as reasoning distortions. Prepares learners to think independently in team and organisational settings.

  • Lesson 4 • Judgment and Decision Biases

    Covers confirmation bias, anchoring, availability heuristic, and overconfidence. Learners trace how each bias corrupts specific stages of decision-making.

  • Lesson 5 • Useful Mental Models

    Introduces first-principles thinking, inversion, second-order effects, and Occam's razor. Provides structured lenses that counteract bias and improve analysis.

Chapter 5See details

Evidence Evaluation and Source Analysis

  • Lesson 1 • Recognising Misinformation and Spin

    Identifies techniques used to distort facts: cherry-picking, framing effects, and false balance. Builds resilience against persuasion tactics that exploit cognitive biases.

  • Lesson 2 • Statistical Reasoning Essentials

    Covers sample size, correlation vs. causation, base rates, and misleading graphs. Prevents common quantitative errors that distort evidence-based conclusions.

  • Lesson 3 • Types and Quality of Evidence

    Classifies evidence by type—anecdotal, empirical, expert, statistical—and ranks quality. Gives learners a hierarchy for weighing competing information sources.

  • Lesson 4 • Evaluating Source Credibility

    Applies criteria of expertise, accuracy, objectivity, currency, and purpose to sources. Directly addresses the challenge of information overload in professional life.

  • Lesson 5 • Building an Evidence-Based Case

    Synthesises evidence evaluation skills into constructing well-supported positions. Connects back to argument structure from Chapter 2 with richer evidentiary grounding.

Chapter 6See details

Problem Framing and Analysis

  • Lesson 1 • Root Cause Analysis

    Covers fishbone diagrams, fault tree analysis, and causal loop thinking. Ensures learners address causes rather than symptoms in any domain.

  • Lesson 2 • Decomposing Complex Problems

    Applies issue trees, MECE structuring, and component analysis to large problems. Enables learners to manage complexity without losing sight of the whole.

  • Lesson 3 • Why Problem Framing Is Critical

    Demonstrates how misframed problems lead to wasted effort and wrong solutions. Motivates rigorous framing as the highest-leverage thinking activity.

  • Lesson 4 • Reframing and Perspective Shifts

    Uses analogical thinking, role reversal, and constraint removal to unlock new framings. Prepares learners for creative problem-solving covered in the next chapter.

  • Lesson 5 • Techniques for Defining Problems

    Teaches the 5 Whys, problem statement templates, and boundary-setting methods. Gives learners repeatable tools for arriving at precise problem definitions.

Chapter 7See details

Decision-Making Under Uncertainty

  • Lesson 1 • Risk Assessment and Tolerance

    Covers risk identification, impact-likelihood mapping, and personal risk tolerance calibration. Enables learners to make decisions that reflect both logic and appropriate caution.

  • Lesson 2 • Probabilistic Thinking

    Teaches expected value, scenario planning, and probability estimation under uncertainty. Connects statistical reasoning from Chapter 5 to forward-looking decisions.

  • Lesson 3 • Structured Decision Frameworks

    Introduces cost-benefit analysis, decision matrices, and multi-criteria evaluation. Provides repeatable tools that reduce reliance on gut feeling alone.

  • Lesson 4 • Decision-Making Fundamentals

    Defines decision quality, distinguishes it from outcome quality, and maps the decision process. Corrects the common error of judging decisions solely by results.

  • Lesson 5 • Reviewing and Learning from Decisions

    Establishes decision journals, after-action reviews, and feedback loops as learning tools. Closes the decision cycle and builds cumulative judgment over time.

Chapter 8See details

Strategic and Systems Thinking

  • Lesson 1 • Mapping and Modelling Systems

    Teaches causal loop diagrams, stock-and-flow models, and system archetypes. Gives learners visual tools to represent and communicate complex dynamics.

  • Lesson 2 • Synthesising Information at Scale

    Applies structured synthesis, executive summaries, and insight hierarchies to large data sets. Prepares learners to communicate complex analyses to senior audiences.

  • Lesson 3 • Applying Critical Thinking Strategically

    Integrates all course skills into a capstone strategic analysis framework. Learners practice end-to-end critical thinking on a complex, realistic scenario.

  • Lesson 4 • Strategic Thinking Principles

    Covers long-term orientation, trade-off analysis, and competitive positioning logic. Elevates learners from tactical problem-solvers to strategic thinkers.

  • Lesson 5 • Introduction to Systems Thinking

    Defines systems, feedback loops, emergence, and unintended consequences. Shifts learners from linear cause-effect thinking to dynamic, interconnected reasoning.

Certification

Your valid completion certificate

This course is for you:

  • Managers: who need to lead teams through high-stakes decisions confidently.

  • Journalists: seeking sharper tools to interrogate sources and detect spin.

  • Entrepreneurs: who want to stress-test assumptions before committing resources.

  • Graduate students: preparing to analyse research and defend academic arguments.

  • Policy analysts: who must weigh competing evidence and advise decision-makers.

  • Career changers: building intellectual credibility in a new professional field.

What our students say

Your lessons are perfect. I purchased the one-year package and finally have the opportunity to follow various topics of interest without needing to change platforms... I'm grateful for everything you do, I've already recommended you to other people...
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Giulio CarloDigital Marketing Student
I like how the lessons are straight to the point and how I can change chapters and skip content I don't need.
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