Cooperation as a causal factor in human evolution: a scientific clarification and analysis of German high school biology textbooks

Many evolutionary anthropologists view cooperation as core to the evolutionary success of our species. Concurrently, many sustainability scientists view cooperation as core to the future sustainable development of our species. When it comes to biology education, however, it is unclear how or if students are being engaged in these scientific perspectives. This article offers an overview of scientific perspectives regarding cooperation as a central causal factor in shaping human behaviour, cognition, and culture during human evolution. Against this background, we analysed 23 German high school biology textbooks with the aim to understand if and how cooperation is presented as a causal factor in human evolution and behaviour. Overall, the role of cooperation, especially the emotional and motivational aspects of cooperative behaviour, and the role of a cooperative social and cultural environment in shaping human traits, appears to be significantly deemphasized compared to the role of individual brain size and 'intelligence' in the evolution of our species. Furthermore, in sections on behavioural ecology, humans are hardly ever presented as an example of a highly cooperative species. Overall, textbooks show a diversity of strengths and weaknesses, from which we identify several learning opportunities in the appropriate integration of cooperation science within biology education.