DEDUCTION By N., Pam M.S. - April 7, 2013 1. The conclusion arrived at after reasoning processes. 2. Process of deductive reasoning. Compare induction. DEDUCTION: "Joe's result came after careful deduction of all parameters." Related Psychology Terms REASONING FALLACY SYLLOGISM TWO-PLUS-TWO PHENOMENON FORMAL REASONING ADJUDICATION RATIONAL RATIONAL PSYCHOLOGY DEDUCTIVE REASONING RULES OF INFERENCE Cite this page: N., Pam M.S., "DEDUCTION," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/deduction/ (accessed April 1, 2020).