Question about my social skills

try to look at their eyes. I know it can be a bit hard, but if you know for sure tha the other person is neurotypical, their eyes will wander a bit allover the place an they'll get abit aggy n try to fob you off. that's how I can tell... as for other autistics, well f*** knows...

If you can't tell whether or not someone is lying perhaps another way would be to ask yourself how serious the consequences are if they are lying - is trusting them likely to put you in a dangerous/illegal/seriously uncomfortable situation? If so, it's better to be cautious and risk upsetting someone than put yourself in a bad position. A lot of neurotypical people struggle with this as well - some people are very convincing and uncaring about the trouble and hurt they cause to other people. 

Yes unfortunately I also have no answer to this- I find it very hard to tell too if someone is lying and I tend to believe what I am told. What I have noticed though is that if over time the actions of someone (I don't mean facial expressions and gestures- I cannot read those and actually do not even look at people's faces most of time) do not match up with what they are saying. For example, if someone keeps saying nice things but then does things that are not in your best interests or harmful. Then they might be lying... but this is not particularly helpful as by the time they have acted in a way that has caused you harm or distress/ was not in your best interests it's a bit late to realise they might have been lying... 

It's a hard one to bite. You might never be able to learn if you're autistic and alexithymic, like me. I'm 43 and I can't tell when my mom is. 

It all starts with a differently build Theory of Mind for autistic and non-autistic.

Watch www.youtube.com/watch