Cryptomnesia: we see something somewhere and later remember it as something we did or made ourselves.

False Memory: remembering things we think we made, but which in fact never happened.

Suggestibility: we are willing to accept suggestions from others and build on them for actions, if someone says something often enough we start to believe in it.

Spacing Effect: by putting more time between studies we remember things better because it gets into our long term memory.