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Psychology textbook (2026)

This section of the site serves as a textbook for the IB psychology curriculum. The textbook includes videos, vocabulary resources, quizzes, and full references. You may also want to look through the personalized learning modules which simplify the units and focus more directly on exam preparation.

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Chapter 1: Research in psychology

An overview of the field of psychology and a look at the research methods that define it.

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Chapter 2:  Critical thinking in psychology

What is meant by critical thinking?  How do we show this in our assessments? A toolbox of critical thinking strategies.

Chapter 3: The Cognitive approach

This chapter looks at how cognitive processes affect behavior - particularly, memory and thinking.

Chapter 4: The biological approach

This chapter looks at the role of biological factors on behavior and cognitive processes.

Image: CC from Flickr by Ryan Soma

Chapter 5:  The sociocultural approach

This chapter looks at the role of other people on our behavior - as well as the role of culture.

Chapter 6: Abnormal psychology

This chapter examines the origins of abnormal behavior and the effectiveness of both diagnosis and treatment.

Image: DFaure adapted from wikicommons 2014

Chapter 7: Developmental psychology

This chapter looks at the cognitive and social development of children.

Chapter 8: Health psychology

This chapter looks at how health psychologists promote positive health behaviors - and the origins of health problems such as addiction, stress, and obesity.

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Chapter 9: The psychology of human relationships

This chapter looks at how people interact.  The chapter focuses on pro-social behavior, interpersonal relationships, and group dynamics.

Chapter 10:  Internal assessment

This chapter discusses how to write a successful internal assessment.

Chapter 11: External assessment

This chapter is an overview of how students are assessed on Papers 1, 2, and 3.

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