| Children delay gratification for cooperative ends R Koomen, S Grueneisen, E Herrmann Psychological science 31 (2), 139-148, 2020 | 58 | 2020 |
| An investigation of children’s strategies for overcoming the tragedy of the commons R Koomen, E Herrmann Nature human behaviour 2 (5), 348-355, 2018 | 27 | 2018 |
| The effects of social context and food abundance on chimpanzee feeding competition R Koomen, E Herrmann American journal of primatology 80 (2), e22734, 2018 | 18 | 2018 |
| Chimpanzees overcome the tragedy of the commons with dominance R Koomen, E Herrmann Scientific reports 8 (1), 10389, 2018 | 10 | 2018 |
| Discounting for money, food, and sex, over the menstrual cycle BT Vincent, M Sztwiertnia, R Koomen, JG Warren Evolutionary Psychological Science 9 (1), 71-81, 2023 | 5 | 2023 |
| Can We Nudge Green Cooperation? R Koomen | 1 | 2019 |
| Social influences on children's delay of gratification B Koymen, K Jensen, R Koomen, L Goncalves OSF, 2021 | | 2021 |
| What a New Marshmallow Test Teaches Us About Cooperation R Koomen, S Grueneisen, E Herrmann Image, 2020 | | 2020 |
| Blog post. 7 things to know about human psychology when dealing with the Coronavirus R Koomen | | 2020 |
| 7 things to know about human psychology when dealing with the Coronavirus R Koomen | | 2020 |
| Blog post. What's a green nudge? R Koomen | | 2020 |
| What's a green nudge? R Koomen | | 2020 |
| Blog post. Can We Nudge Green Cooperation? R Koomen | | 2019 |
| Publisher Correction: An investigation of children's strategies for overcoming the tragedy of the commons. R Koomen, E Herrmann Nature Human Behaviour 2 (7), 522-522, 2018 | | 2018 |
| What children can teach us about looking after the environment R Koomen | | 2018 |
| Exploring the evolutionary & ontogenetic roots of human strategies for overcoming the tragedy of the commons RM Koomen Universität Leipzig, 2017 | | 2017 |
| Feast or famine: An investigation of scarcity and co-feeding effects in chimpanzees R Koomen, E Herrmann S. Karger, 2015 | | 2015 |