There are also cultural and social factors that put people at greater risk.

A third area will be social factors and here you've already mentioned the weather.

His trust model is based on social and psychological factors.

They say social and psychological factors also are at play.

It may be that the social factor is the critical one.

There are, of course, complex social and cultural factors to consider.

They also look for response from the child to environmental and social factors.

So we have to look deeper to cultural and social factors.

"There are a great many political, economic and social factors to be considered."

But there are also some more basic social factors at work.