Explanation

Peer influence is when you choose to do something you wouldn't otherwise do,

because you want to feel accepted and valued by your friends.

It isn't just or always about doing something against your will.

Comparative psychology refers to the scientific study of the behavior and mental processes of non-human animals,

especially as these relate to the phylogenetic history, adaptive significance, and development of behavior.

The phrase comparative psychology may be employed in a narrow and a broad meaning.