Rapport, persuasion, deception and the reading of social behaviour shape Jack Schafer's practical psychology, informed by his experience as an FBI special agent and behavioural analyst. The Like Switch, written with Marvin Karlins, turns techniques used to build rapport and recruit sources into everyday advice about making people feel comfortable, recognising signals of friendliness and strengthening new relationships. The Truth Detector applies similar behavioural ideas to questioning and encourages readers to create conditions in which deception is harder to maintain. Schafer's books are structured around short examples, checklists and named techniques rather than academic discussion, with workplace and personal interactions treated alongside law-enforcement stories. They fit communication skills, behavioural psychology and persuasion, especially for readers who like practical frameworks for noticing body language, conversational cues and the small choices that influence whether another person feels trust or resistance. Read more Less
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