For decades, scientists have tried to answer a simple question: why be honest when deception is possible? Whether it is a peacock's tail, a stag's roar, or a human's résumé, signals are means to ...

Inoculation theory proposes that psychological inoculation – analogous to getting a medical vaccination – can immunize people against persuasive attacks. The idea is that by explaining to people how ...

By Hugo Francisco de Souza A rare human challenge-style trial shows that even with poor ventilation and prolonged exposure, ...