- Investigating how sleep patterns vary beween humans and other primates, and across various human cultures (Nunn & Samson 2018).
- Contextualizing the "uniqueness" of Homo sapiens by identifying traits that fall within predicted boundaries based on comparison across primates (Miller et al. 2019a).
- Investigating the evolution of the human brain through phylogenetic comparative analysis (Miller et al. 2019b).
- Understanding relationships between parasites, vectors, and hosts through the field of evolutionary medicine (Nunn 2018).
- Revealing a biological basis, rather than a uniquely-human cultural basis, for the relationship between early-life adversity and longevity (Zipple et al. 2019).
The phylogenetic relationship between species affects patterns of traits across those species, with more closely-related species more likely to share traits. Therefore, comparaitve comparative approaches rely on phylogenetic analysis to distinguish between relationships that are associated with phylogeny and those that have other causes.