Social testing

Re: "How do you know someone's true personality?"
A lot of the answers here recommend observing a person when they're hungry or tired, or even intentionally provoking them/depriving them in order to see their “true” personality.
This approach is bullshit.
You can do this to people, but all you’ll be seeing is them at their worst. Not their best personality and certainly not their “true” personality.
-- Matthew Manning, quora.com