Deductive Reasoning Flashcards
types of reasoning
deductive
inductive
deductive reasoning
based on the rules of logic
conclusions must be true
deterministic
inductive reasoning
conclusions are likely, but not necessarily true
probabilistic
theories of reasoning
normative reasoning
descriptive reasoning
normative reasoning
how one ought to reason
descriptive reasoning
how people actually reason
conditional reasoning
if ___, then ___
forms of reasoning
modus ponens
modus tollens
affirming the consequent
denying the antecedent
modus ponens
if P occurs, then Q occurs
valid reasoning
modus tollens
if Q doesn’t occur, then P didn’t occur
valid reasoning
affirming the consequent
if Q occurs, then P has occurred
invalid reasoning
denying the antecedent
if P didn’t occur, then Q doesn’t occur
invalid reasoning
pragmatic reasoning schema
deciding what is true based on experience
permission schema
if a certain action is to be taken, then a certain condition must be met
obligation schema
if a condition is met, then you are obligated to do something