Barriers to Reasoning Rationally Or…why do we do dumb things
Exaggerating the improbable We are influenced by the availability heuristic—the tendency to judge the probability of an event by how easy it is to think of examples or instances.
Take a plane or a car?
Avoid or minimize risk and losses Avoiding loss Avoid or minimize risk and losses
Risky!!
Confirmation bias We pay attention to information that confirms what we believe while ignoring information that opposes our beliefs
Confirmation bias The New Deal and Unemployment
Mindset of mental set Try to solve new problems using procedures that worked before on a similar problem
Mindset of patterns Tendency to find patterns in events, even though these patterns are just random noise.
Such as a supposed link between immunizations and autism
Believing that an outcome was predictable all along Hindsight bias Believing that an outcome was predictable all along
The need for cognitive consistency Cognitive dissonance is a state of tension that occurs when a person simultaneously holds two cognitions that are psychologically inconsistent Or holds a belief that is inconsistent with the person’s behavior
People are motivated to reduce dissonance Changing a belief Changing a behavior Rationalizing