Selfish
I'd say that they are reflective, thoughtful or opinionated
Telephone conversations occur when one person makes a call to a second person and the second person answers. The conversation happens when each person participates in the discussion.
A person who makes up their mind and then changes it can be called indecisive or fickle.
Subject.
a psycologist
no
If the person was female, she would be called a maid.
Capricious, fickle.
The person being evaluated is commonly referred to as the "evaluatee" or the "subject."
a specialist
They are your cousin. Nothing changes sharing a common ancestor.
This would be an eavesdropper.