While both theories call for governmental hierarchy, they differ drastically in their views of human potential and the preferred means to achieve political order.

A theory popular with some early childhood experts, called "Tools of the Mind."

This rationale for withholding information, sometimes called the mosaic theory, is controversial.

Behavior analysis with organizations is sometimes combined with systems theory in an approach called organizational behavior management.

The theory calls for skills, attributes and roles which are additional to the demands of traditional leadership.

To all life, an evolutionary theory called the "onion-shell-model" is employed.

The optimistic grand slam has a 46 percent chance, when theory calls for 55 percent.

Such theories, he admits, make most people laugh or call him an embarrassment to the university.

A theory called the "primrose path" is intended to explain how preference reversal can lead to addiction in the long run.

His theory of evolution based on empirical evidence would call into question Christian beliefs and Victorian values.