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Yasser Mattar is a paranormalist and behavioural scientist and as such he has recently authored Workplace Warfare: How to Survive Incompetent Colleagues, Horrible Bosses & Organizational Theatrics, a book on commonplace, but nonetheless nasty, office politics. As a paranormalist, with the Singapore Paranormal Investigators, he has investigated many paranormal phenomena, including Thai black magic, parallel dimensions, and abandoned buildings. He conducted numerous talks and tours for organisations including Kaplan, NUS, and SOTA.