ABSTRACT
Moral Propositions express the author's moral judgement about what is right or wrong, should or should not occur and so on. Descriptive Propositions express the author's claim about what the world is like. Most teachers think that positive reinforcement is the most ethical form of behaviour control. The author guess is that many would have allocated this as a moral proposition. Clue Words provide a clue, but only a clue, to the possible presence of a moral proposition; they are not to be used as a mindless recipe in place of thoughtful analysis. Sometimes, even when it is a moral use of a clue word, the word is not used to express the moral judgement of the author and so that proposition is not a moral proposition. The author uses the tag ambiguous proposition for propositions that, upon one interpretation of some key turn of phrase, fall into one type and upon another interpretation fall into another type.
