Read clusters, not single signals
One crossed arm means the room is cold. A crossed arm plus a step back plus answers that have shrunk to a word means something. The working rule is to look for three signals pointing the same way, and to look for change. Everyone has a baseline: some people never hold eye contact and some fidget when they are perfectly happy. What matters is the shift.
Where to look
Faces are the most managed part of a person, so they are the least reliable. Feet and torso are more honest. A person who is glad to be talking to you points their whole body at you. A person who wants to leave keeps the head turned politely toward you while the feet aim at the door. Watch for a glance over your shoulder, a bag lifted onto a lap, keys in hand, or replies like "anyway" and "well, so," which are the verbal equivalent of standing up.
Interest has its own cluster: leaning in, questions that build on your last answer, and a buzzing phone ignored. In a group, a person who inhales and leans forward is trying to get a word in, and making room for them is one of the more generous things you can do in a meeting.
Words that disagree with the voice
When the words say "it's fine" and the tone says otherwise, believe the tone. In text, the equivalents are replies that get shorter and slower, a switch from warmth to bare logistics, and questions that stop coming back.
Check instead of guessing
A cue tells you that something changed, not why. A light, specific check-in settles it and costs nothing.
- To offer an exit, say, "I've kept you a while, I'll let you get back to it."
- After a joke that fell flat, say, "That came out wrong, and I'm sorry if it stung."
- With a friend who has gone quiet, say, "You seem a little off today, and I'm around if you want to talk."
Take the answer you are given. If they say they are fine, do not cross-examine them.
Know the limits
Eye contact, personal space and silence mean different things in different cultures, and many people, including many autistic people, express attention in ways that do not match the textbook. Treat your reading as a guess to be checked, never as a verdict.
Tip If you want to look approachable at a gathering, keep the phone in your pocket, your arms uncrossed and your body angled toward the room.
