Schizophrenia has been an evolutionary paradox: it has high heritability, but it is associated
with decreased reproductive success. The causal genetic variants underlying schizophrenia …

Bipolar disorder is a mental health disorder characterized by extreme shifts in mood, high
suicide rate, sleep problems, and dysfunction of psychological traits like self-esteem (feeling …

Covariation of life history traits across species may be organised on a 'fast-slow'continuum.
A burgeoning literature in psychology and social science argues that trait covariation should …

Romantic love is a phenomenon of immense interest to the general public as well as to
scholars in several disciplines. It is known to be present in almost all human societies and …

The COVID-19 pandemic has caused a global societal, economic, and social upheaval
unseen in living memory. There have been substantial cross-national differences in the …

Eating disorders are evolutionarily novel conditions. They lead to some of the highest
mortality rates of all psychiatric disorders. Several evolutionary hypotheses have been …

In September of 2019, the largest-ever (N= 477,522) genome-wide-association study of
same-gender sexuality was published in Science. The primary finding was that multiple …

Since the Industrial Revolution, human societies have experienced high and sustained rates
of economic growth. Recent explanations of this sudden and massive change in economic …

Objectives Sexual selection typically centers on bodily and psychological traits. Non-bodily
traits ranging from housing and vehicles through art to social media can, however, influence …

My main goal in this paper is to propose a reformulation of foundational models in
behavioral research, including Tinbergen's (1963) well-known four levels of analysis …