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Think you’re good at reading people? Someone avoids eye contact: they’re lying. Someone crosses their arms: they’re defensive. Someone smiles: they’re happy. Someone steps backward: they’re uncomfortable. It all sounds intuitive. The problem is that decades of research on nonverbal communication suggest human behavior isn’t a code that can be decoded that simply. A gesture doesn’t exist in isolation. The same smile can communicate something completely different depending on who is smiling, who they’re interacting with, their relationship, their culture, and what’s happening around them. Even some of our most familiar assumptions—like everyone having a fixed “personal space bubble” or being able to spot a liar because they look nervous—become much more complicated when researchers actually test them. And lie detection might be the most important example. People often believe behaviors like avoiding eye contact, fidgeting, or appearing nervous expose deception. But reviews of the scientific evidence have found that nonverbal indicators of deception are generally weak and unreliable. That matters beyond everyday conversations. These assumptions influence hiring interviews, relationships, politics, policing, airport security, and the way we judge strangers every day. The takeaway isn’t that nonverbal behavior tells us nothing. It’s that context matters. Instead of asking, “What does that gesture mean?” we might need to ask, “What could that behavior mean in this person, in this situation, in this culture, with everything else that’s happening?” Because people aren’t dictionaries—and neither is their body language. Which of these four myths did you believe? #BodyLanguage #HumanBehavior #psychologyfacts #research #communicationskills