Hypothesis Testing

Induction versus Deduction

Induction is bottom up approach to reasoning, proceeding from specific observations to general explanations.

Deduction goes the other way: from general to specific.

All methods of doing science use both inductive and deductive reasoning, but the emphasis that they receive differs.

Deduction

Deduction

  • Emphasis is on falsification
  • Requires multiple working hypotheses
  • In the end, there is (hopefully) only one that hasn't been falsified
  • Limitation: "correct" hypothesis MUST be among the alternatives studied

Induction