Determine Whether the Following Argument Is Valid by Using Either

question 96

Short Answer

Determine whether the following argument is valid by using either the diagram method or the rules of the syllogism.
No Xs are Ys.
Some Ys are not Zs.
So, some Xs are not Zs.

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Definitions:

Mood Disorder

An altered mood state severe enough to interfere with a person’s social and occupational functioning (for example, ability to work or go to school) and whose range of symptoms is not limited to the person’s feelings, but affects other bodily and behavioural systems as well.

Childhood-Onset

Referring to disorders or conditions that begin during the childhood years of an individual's development.

Adult-Onset

A term used to describe conditions or diseases that appear for the first time or are first diagnosed in adulthood.

Mood Disorders

A category of mental health disorders characterized by a significant disturbance in a person’s mood, such as major depression or bipolar disorder.