Genetic factors in aggression

Start with twin studies

This topic is one section of the Aggression unit in Psychology. A useful starting point is Aggression: Genetic Factors, a mind map that compares identical and non-identical twins and introduces how researchers compare similarities in aggression. Use its branches to organize the ideas before looking at the research in more detail.

Next, open The role of genetic factors on aggression. Its twin studies section includes research by McGuffin and Gottesman. Compare how the two maps present twin research, then explain in your own words what a comparison of twins is intended to explore.

Explore other explanations

The mind map Genetic explanations of aggression (AO1) includes an XYY explanation. Look at how it presents the explanation and the research associated with it. You can compare this approach with the twin studies in the earlier maps, paying attention to the different evidence each resource describes.

Genetics introduces heritability and the idea that genes can influence aspects of biology. The mind map Genetic Factors also covers MAOA and serotonin. Reading these alongside the twin study maps gives you several ways to organize the material listed on this page.

Use maps and flashcards together

After reading a map, use the Genetic factors in aggression flashcards to practice recalling explanations, research and questions about the evidence. Try answering a card before looking back at the map. If an answer is difficult, return to the relevant branch and make a short summary in your own words.

This sequence keeps your study focused on genetic factors while connecting the topic to its place in the Aggression unit. Choose a resource to begin, then use the flashcards to check what you can explain.