Treatment may be important for both physiological and psychological reasons.

The doctors had no physiological reason to give Sean for her continued coma.

But that will be for psychological rather than physiological reasons.

These sound substitutions are usually made for some physiological reason.

"The report says there's no physiological reason for her not to speak."

Until the late forties, the chest was a tough place in which to work for many physiological reasons.

And the physiological reason for that is, people like structure.

Women spend more time in washrooms than men, for physiological and cultural reasons.

This turns out, for unforeseen physiological reasons, to be another major mistake.

There was absolutely no physiological or psychological reason why she should be affected by space travel.