It was purely psychological, but the frozen gas outside seemed to claw at her.

The motivation for these useless acts was of a purely psychological nature.

"It's purely psychological, but it seems to be the case."

We always hire women; for purely psychological reasons they are safer than men.

And that is the great tribute to its purely psychological character.

Probably it was being surrounded by walls, he thought, something purely psychological.

This is purely psychological and I don't believe our friends are very good at psychology.

I believe that to be very important in purely psychological terms.

Yet others become depressed for purely psychological reasons, which are not directly associated with the surgery.

He knew his reaction was purely psychological- the effect of having a different entity control the ship- but it felt real.