11. Like Holmes, he is a master of observation and deductive reasoning . 12. In opposition, deductive reasoning is a basic form of valid reasoning. 13. The questions and games help children develop deductive reasoning , comparing and classifying skills. 14. Any useful hypothesis will enable predictions, by reasoning including deductive reasoning . 15. The version of Sandiego for older children requires some reading skills and deductive reasoning . 16. This seems to imply that nicotine patches are somehow increasing his deductive reasoning abilities. 17. Because, by deductive reasoning , the draft isn't all that important. 18. Deductive reasoning can be contrasted with inductive reasoning, in regards to validity and soundness.19. In abductive reasoning, unlike in deductive reasoning , the premises do not guarantee the conclusion. 20. He can do things that very few can-read people's minds and use deductive reasoning .