The Betting Task223 is designed to assess sensitivity to betting magnitudes when outcomes are actually probabilistically equivalent, a form of irrational choice bias in the face of risk. Here, rats may again choose between safe and risky levers. The latter delivers either twice the value of the safe lever or no reward at 50:50 odds; thus both levers have equal utility, but the size of the “bet” can be varied to identify wager-sensitive and insensitive rats.
