Franco and Carla are walking down the street when they spy a paper bag. Carla is the first to pick it up, and discovers 20 one-dollar bills inside. "This is great!" says Carla. "Here; you take $5 and I'll keep $15." Franco indignantly huffs, "You're nuts! Either give me half or put the bag back down. I'd rather have nothing than take your lousy offer!" Which barrier to rational reasoning is Franco illustrating

Fairness bias

Explanation:

In this example, Franco is illustrating fairness bias. Fairness bias occurs when an individual is inclined to think in a way that promotes fairness above all costs. However, this bias can be considered a barrier to rational reasoning because it might be taken to an extreme, in which case it jeopardizes the individual's chances of benefitting from a less than fair arrangement. This is the case of Franco in this example.