Her second book is about the role of non-economic factors, especially religion in economic development.

It is based on the role of minerals, enzymes, and other dietary factors.

Much of his work concerns the role of educational and cultural factors.

Critics also pointed to his emphasis on the role of language and, on the other hand, emotional factors in human development.

We need now to examine the role of contextual factors directly and in more detail.

The role of such factors in human evolution is controversial.

The causal role of different socioeconomic factors may vary by country.

As he examined his original theory, he began to identify the role of other key factors in development.

The possible role of psychological factors in either causing or maintaining the pain must be acknowledged.

However, the role of genetic factors is not entirely clear in determining this clinical expression.