It seems to me like there's two main kinds of lies that interrogators use:
1. Lies about the process / promissary lies. e.g. "If you just confess, you can go home."
2. Lies about evidence. e.g. "We talked to {Friend|Family|Co-conspirator} and they said you did it and they have the {item} to prove it. It's not going to look good if you continue to lie to me."
#1 seems obviously bad to me. Too high of a risk of tricking innocent people into thinking they can end the stress by falsely confessing.
#2 seems less bad, possibly beneficial. There are other comments about how this can speed up interrogations by getting people who are guilty to think they've been caught and confess. I could be convinced otherwise.
In my opinion, sounds like 1 and 2 should be illegal for minors. But 1 should be illegal in general, for adults too.
An innocent person who hears #2 may reason that the police are faking evidence, they'd better give a fake confession because otherwise the police will just use the faked evidence in court. He may not be up to date on the laws about exactly at what steps in the process the police are allowed to use the fake evidence.
Alternatively, he might think that his friend actually implicated him and that he has the choice of saying nothing and being convicted because of that, or confessing to a lesser charge.
Alternately, he might just think that police who'd fake evidence are corrupt, and that corrupt police could do a lot worse, like fake evidence against his whole family or just shoot him, so he'd better confess just to come out of this alive.
1. Lies about the process / promissary lies. e.g. "If you just confess, you can go home." 2. Lies about evidence. e.g. "We talked to {Friend|Family|Co-conspirator} and they said you did it and they have the {item} to prove it. It's not going to look good if you continue to lie to me."
#1 seems obviously bad to me. Too high of a risk of tricking innocent people into thinking they can end the stress by falsely confessing.
#2 seems less bad, possibly beneficial. There are other comments about how this can speed up interrogations by getting people who are guilty to think they've been caught and confess. I could be convinced otherwise.
In my opinion, sounds like 1 and 2 should be illegal for minors. But 1 should be illegal in general, for adults too.