The Biggest Bluff: How I Learned to Pay Attention, Master …

Only a third of tournament hands go to showdown, and the best hand only wins 12% of the time. Facial tells are worse than useless; look at hand motions instead. Her long digression into the science and lore of superstition was particularly fun. If you have a lucky shirt or necklace, Konnikova makes a persuasive case for getting rid of it.

https://www.amazon.com/Biggest-Bluff-Learned-Attention-Master/dp/052552262X