Parents affect offspring fitness by propagule size and quality, selection of oviposition site,
quality of incubation, feeding of dependent young, and their defence against predators and …

Courtship displays are behaviours aimed to facilitate attraction and mating with the opposite
sex and are very common across the animal kingdom. Most courtship displays are …

Women have consistently higher levels of disgust than men. This sex difference is
substantial in magnitude, highly replicable, emerges with diverse assessment methods, and …

The functions of sleep remain elusive. Extensive evidence suggests that sleep performs
restorative processes that sustain waking brain performance. An alternative view proposes …

Darwin proposed an explicitly aesthetic theory of sexual selection in which he described
mate preferences as a 'taste for the beautiful', an 'aesthetic capacity', etc. These statements …

Animals often need to signal to attract mates and behavioural signalling may impose
substantial energetic and fitness costs to signallers. Consequently, individuals often …

The Fisher-inspired, arbitrary intersexual selection models of and, including both stable and
unstable equilibrium conditions, provide the appropriate null model for the evolution of traits …

Dance is ubiquitous among humans and has received attention from several disciplines.
Ethnographic documentation suggests that dance has a signaling function in social …

Sexual selection was proposed by Darwin to explain the evolution of male sexual traits such
as ornaments and elaborate courtship displays. Empirical and theoretical studies have …

From fiddler crabs to humans, animals perform repetitive displays showing neuromotor skill
and vigour. Consistent repetition of identical notes (vocal consistency) facilitates the …