The perverse incentives of mixed-motive games lead to option-limiting and other actions that seem irrational, but are actually strategic
Closing or degrading a channel of communication
Ignoring information, also known as strategic ignorance
Purposely believing something that’s false
A general who firmly believes his army can win, even though the odds are against it, might nevertheless intimidate your opponent into backing down
Convince others that you’ve sabotaged yourself.