Critical Thinking: An Introduction



Overview

In print, online and in conversation, we frequently encounter conflicting views on important issues: from climate change, vaccinations and current political events to economic policy, healthy lifestyles and parenting. It can be difficult to know how to make up one’s own mind when confronted with such diverse viewpoints.

This course teaches you how to critically engage with different points of view. You are shown how to assess others’ views and arrive at your own point of view through reasoning. We discuss examples of both reasoning about facts and the reasoning required in making practical decisions. We distinguish risky inferences with probable conclusions from risk-free inferences with certain conclusions. You are also given some guidelines that will help you decide to what extent to trust the person, organisation, website or publication defending a certain position. 

This course will be enjoyed by those who relish the challenge of thinking rationally and learning new skills. The skills and concepts taught will also be useful when studying other areas of philosophy.

Programme details

Course starts Tuesday 30 September 2025

This is an in-person course which requires your attendance at the weekly meetings in Oxford on Tuesdays, 2-4pm.

Week 1: What is critical thinking? What is the difference between reasoning and other ways of forming beliefs or making decisions?

Week 2: What is a logical argument? What is rhetoric?

Week 3: Certainty versus high probability: the distinction between deductive and inductive reasoning.

Week 4: Deductive validity and logical form. 

Week 5: When do arguments rely on hidden premises? What is probability?

Week 6: Inductive generalisations and reasoning about causes.

Week 7: Inference to the best explanation and Bayesian reasoning.

Week 8: Practical reasoning: Reasoning about what to do.

Week 9: When is it appropriate to believe what others tell you? What is the significance of expertise?

Week 10: Putting it all together: We analyse and assess longer passages of reasoning.

Digital Certification

Academic credit

Credit Accumulation Transfer Scheme (CATS Points)

Please note, students who do not register for assessment and accreditation during the enrolment process will not be able to do so after the course has begun. If you wish to gain credit from completing this course you must register to do so before the course starts.

Only those who have registered for assessment and accreditation will be awarded CATS points for completing work to the required standard. Please note that assignments are not graded but are marked either pass or fail.

Learn more about the Credit Accumulation Transfer Scheme.

If you are enrolled on the Certificate of Higher Education at the Department you need to indicate this on the enrolment form but there is no additional registration fee for assessment and accreditation.

Digital certificate of completion 

Students who are registered for assessment and accreditation and pass their final assignment will also be eligible for a digital Certificate of Completion. Information on how to access the digital certificate will be emailed to you after the end of the course. The certificate will show your name, the course title and the dates of the course attended. You will be able to download the certificate and share it on social media if you choose to do so.

Fees

Description Costs
Course fee (with no assessment) £300.00
Assessment and Accreditation fee £60.00

Funding

If you are in receipt of a UK state benefit, you are a full-time student in the UK or a student on a low income, you may be eligible for a reduction of 50% of tuition fees. See details of our concessionary fees for short courses.

 

Tutor

Dr Andrea Lechler

Andrea Lechler holds a degree in Computational Linguistics, an MSc in Artificial Intelligence, and an MA and PhD in Philosophy. She has extensive experience of teaching philosophy for OUDCE and other institutions. Her website is www.andrealechler.com. 

Course aims

  • To help students improve their critical thinking skills.    
  • To help students reflect on how people reason and how they try to persuade others of their views.
  • To make students familiar with the principles underlying different types of good reasoning as well as common mistakes in reasoning.
  • To present some guidelines for identifying trustworthy sources of information.

Teaching methods

The tutor will present the course content in an interactive way using plenty of examples and exercises. Students are encouraged to ask questions and participate in class discussions and group work. To consolidate their understanding of the subject they will be assigned further exercises as homework.

Learning outcomes

By the end of the course students will have been given the opportunity to have learnt how to:

  • be able to pick out and analyse passages of reasoning in texts and conversations;
  • understand the most important ways of assessing the cogency of such reasoning;
  • know how to assess the trustworthiness of possible sources of information.

Assessment methods

Only those students who have registered for assessment and accreditation, in advance of the course start date, can submit coursework/assignments for assessment.

Assessment

Assessment is based on a set of exercises similar to those discussed in class. One set of homework exercises can be submitted as a practice assignment.

Application

How to enrol

Please use the 'Book now' button on this page. Alternatively, please complete an enrolment form.

How to register for accreditation and assessment

To be able to submit coursework and to earn credit (CATS points) for this course, if you wish to do so, you will need to register and pay an additional £60 fee. You can do this by ticking the relevant box at the bottom of the enrolment form or when enrolling online. 

Students who do not register for CATS points during the enrolment process will not be able to do so after the course has begun.

If you are enrolled on the Certificate of Higher Education at the Department you need to indicate this on the enrolment form but there is no additional registration fee.

Level and demands

The Department's Weekly Classes are taught at FHEQ Level 4, ie first year undergraduate level, and you will be expected to engage in a significant amount of private study in preparation for the classes. This may take the form, for instance, of reading and analysing set texts, responding to questions or tasks, or preparing work to present in class.

Terms & conditions for applicants and students

Information on financial support