Theories on the origins of the Mandaeans have varied widely.

Theories as to why blacks would look favorably upon negative images of themselves vary.

Theories vary as to when the jewel was made and for what occasion.

Theories vary on how to measure "participation of other political elements."

Theories and conceptions of warfare have varied in different places throughout human history.

Theories for decrease in activity from adolescence to adulthood vary.

Theories of personality vary across different psychological schools and orientations.

Theories vary, with the effect on oil prices a key factor.

Theories vary on how the place got its modern name of Windhoek.

Theories on the date of composition of the Gita vary considerably.