The longest time gap that I've been made aware of between myself and those from my home 'world' is roughly nine years. It's a strange pattern, however; there seem to be two separate gaps in memories.
The first spans two years - my memories come first, my colleague's are a year later, and my...partner's are a year after that.
The second gap is a seven-year one, from what my partner remembers and what the other two people that are here from our home 'world' do.
As for the second question: I'm not sure about there being negative effects after brainwashing, though it's entirely possible. There are certainly negative after-effects after being taken for experimentation, however.
If you'd like, we can discuss this in person at some point?
no subject
The first spans two years - my memories come first, my colleague's are a year later, and my...partner's are a year after that.
The second gap is a seven-year one, from what my partner remembers and what the other two people that are here from our home 'world' do.
As for the second question: I'm not sure about there being negative effects after brainwashing, though it's entirely possible. There are certainly negative after-effects after being taken for experimentation, however.
If you'd like, we can discuss this in person at some point?
-- M.E.