Blink. The Power of Thinking Without Thinking
Malcolm Gladwell is one of my favourite writers. He has that rare ability to find stories that link together to both inform and entertain. The subject of Blink is what Galdwell calls 'thin slicing'; the ability of our intuition to make a decision based on a momentary exposure to information. As a therapist and trainer it's useful on several levels: Gladwell shows how intuition that's untrained by effort and experience is capable of glaring errors, and also he has interesting things to say about the nature of how we acquire our ability to 'know' something without knowing how we know. A great book to take on holiday.
Word Weaving: The science of Suggestion
Word Weaving II: The question is the answer