Guilherme co-authored the following paper:
Age, but not hand preference, is related to personality traits in common marmosets (Callithrix jacchus). (October 2022). Martina Konečná Michaela Masilkova, Vedrana Šlipogor, Guilherme Henrique Lima Marques Silva, Magdaléna Hadová, Stanislav Lhota, Thomas Bugnyar. Royal Society Open Science
The study conducted in the Marmoset Lab at the University of Vienna was aimed at investigating the proximate causes of personality variation in common marmosets. Based on results obtained in previous experiments, the research team explored the hypothesis that brain lateralization (i.e., asymmetry in hemispheric functions) may predict individual personality traits. Contrary to the predictions brain lateralization (accessed through hand preference) was not a significant predictor of marmosets personality. Instead, age was found to be a significant predictor of personality scores, with older individuals being more agreeable and less extroverted. The study indicates that further research on proximate mechanisms should be pursued in order to elucidate what drives personality variation in common marmosets.
Reference
Masilkova, M., Šlipogor, V., Lima Marques Silva, G. H., Hadová, M., Lhota, S., Bugnyar, T., & Konečná, M. (2022). Age, but not hand preference, is related to personality traits in common marmosets (Callithrix jacchus). Royal Society Open Science, 9(10), 220797.
Link
https://royalsocietypublishing.org/doi/full/10.1098/rsos.220797