Reasoning Flashcards
what is the normative question?
how should we reason?
what is the most obvious example of how we should reason?
logic
what is formal logic?
a system of calculating which conclusions follow from a set of facts and the connections between them
when used in psychology, what does formal logic typically focus on?
necessary inferences: inferences which must be true
what does it mean for a fact to have two truth values?
a fact is either true or false.
what is diagnostic reasoning?
given facts, and we draw a conclusion for them. the diagnosis is not necessarily true, but likely
what is probability?
the likelihood of something being true
what is Bayes theorem?
tells us how much to increase our belief by
what is the descriptive question?
how do we actually reason?
what is the mental model theory of reasoning?
we don’t reason using logical rules or probabilities. we imagine possibilities. integrate the facts into one or more models. if conc. is true in every model, then it must be a valid conclusion
describe reasoning via causal mental models
represent causal relations between elements. draw inferences from them. may be inaccurate.
if the mental model is flawed…
the inference will be too
what is belief bias?
judge conclusion by prior belief rather than logic. can’t ignore belief about thefts, even when told to do so
given some evidence for irrationality
people deviate from the normative solutions to tasks.
what does it mean that many problems used in reasoning studies are intractable?
solvable in principle, but not in practice - too long, too much info, too many choices: cannot calcite expected theory
what is bounded rationality?
not rational, but not irrational either.
what does Simon (1957) propose?
we find the optimal solutions given the constraints of cognition and the environment
what does satisficing involve?
set an acceptable standard for the outcome; sample options in turn; choose the first one thats good enough
what does satisficing tell us about heuristics?
they are not inherently biased or irrational - they can be optimal given the constraints
what are the two forms of rationality?
adaptive or normative
what does it mean for rationality to be adaptive?
you take actions to achieve your goal
what does it mean for rationality to be normative?
you follow a coherent normative framework eg. logic
describe dual process theory
we are not simply logical. many psychological theories propose two types. used t explain reasoning and decision making