Roger has a vacant stare. he answers questions in an apathetic, monotonous voice, and shows no emotion, even when discussing events such as his mother's death. roger's affect would be described as

The correct answer is - flat.

Explanation:

Flat affect is reduced in terms of social interaction and emotional blunt or reduced and very less emotional reactivity towards any other people.

Roger's affect is flat as he shows a lesser effect. He is displaying no emotional reaction on people and incidents occur in his life. It is normally due to post-traumatic stress disorder.

Thus, the correct answer is flat.

the trait of personality falls in the middle of the diagram because personality is a mixture of ones nature and environment.