The psychological or physiological origins of hypersensitivity are still not well understood by experts.

But when patients are told their illness has a psychological origin, it can add to feelings of isolation and frustration.

The psychological origins of this intellectual blindness are not hard to discern.

Left now to be determined was only the psychological origin of the Forever Man in his imaginings.

The reported symptoms have been explored by a variety of researchers for possible biological and psychological origins.

"It was your considered opinion that Celia Austin's behaviour had a psychological origin?"

As Plato indicated, thymos is the psychological origin of political action.

No artist of course ever successfully conceals his national, traditional and psychological origins, though some are more prone to do so than others.

U&G theorists focus on psychological and sociodemographic origins of differences in media use.