Once a variety of interests is admitted, the explanatory power of this general sociological theory diminishes, although the importance of particular case studies remains.

Big theories cover more variables and have more explanatory power.

On the face of it, this overlooked possibility has a great deal of explanatory power.

Obesity studies have one thing in common: they lack explanatory power.

The principal theories offered to account for the origin and evolution of stratification are compared and contrasted and their general explanatory power is assessed.