Deductive reasoning in science starts from a generalization and then reaches:

1. Deduction and induction run in opposite directions. 2. In the scientific context, deductive reasoning begins with a generalization, one hypothesis. 3. That hypothesis is then used to reach logical conclusions about the real world. 4. Induction instead builds a generalization up from many specific observations. _Source: OpenStax Psychology 2e (CC BY 4.0), Ch 2 'Psychological Research', sections 2.1-2.4_