In: Psychology
1) What does it mean to say that an argument is valid?
An argument is valid, if the deductive argument has both premises and conclusion to be true. If either of it is false, then the argument is not valid.
When an argument is said to be valid, it means that the reasoning is good and the premises provides justification or logically warrants truth of the conclusion. This does not mean that the premises has to be factually true. It simply means that, premises and conclusion are related logically and makes both of them true.
Example of a valid argument is
All Christians speak English.
Christopher is a Christian.
Therefore, Christopher speaks English.