Martin Seligman

American psychologist at the University of Pennsylvania who founded the Positive Psychology movement — having previously discovered learned helplessness — and whose PERMA model provides the most influential framework for human flourishing.

Founded Positive Psychology as a systematic scientific discipline — shifting psychology's focus from pathology to flourishing — and developed the PERMA framework (Positive emotions, Engagement, Relationships, Meaning, Achievement) as the evidence-based model of human wellbeing.