Comment by sdwr

Anything can provide psychological insight! The primary action is the subject interpreting and responding to something. It doesn't matter what they are engaging with.

I've been watching police interrogation videos, and it's staggering how many people say, unprompted, "It's not like I would just ___", where ___ is exactly what they did and are trying to hide. It's on their mind, so it comes out.

Where it breaks down is when you try to "science" it, and make a blanket rule that applies to all people in all situations.