Chapter 12 - Deductive Reasoning and Decision-Making Flashcards
Deductive Reasoning and Decision-Making
deductive reasoning
begin with specific premises that are generally true - allow you to draw a conclusion based on logic
conditional reasoning
if/then structure; valid/invalid only - type of deductive reasoning which describes the relationship between conditions
decision-making
choosing between 2 or more alternatives (more ambiguous than deductive reasoning)
syllogism
deductive reasoning type - 2 statements that we must assume to be true plus a conclusion - all/none/some - valid/invalid/indeterminate
affirming the antecedent
“if…” part is true = valid
affirming the consequent
“then…” part is true = invalid
denying the antecedent
“if” part is false = invalid
denying the consequent
“then” part is false = valid conclusion
dual process theory
type 1 processing = fast automatic
type 2 processing = slow and controlled focused attn
negative terms
add cognitive burden
belief bias effect
based on prior beliefs or knowledge, related to top down processing
confirmation bias
looking for evidence to support a certain claim rather than evidence of the other
decision-making heuristics
strategies that tend to produce a correct solution
representative heuristic
we judge a sample to be representative of a larger group and of a prototype - often look for random outcomes more likely than orderly outcomes (e.g. 21.97 vs. 22.22 grocery total - would think the 2222 is unusual but it’s just as common as the others)
small sample fallacy
wrong assumption that a small sample of the population from which it is selected - it’s less likely to be representative of a population
base rate fallacy
paying too little attention base rate (how often something occurs in population)