Read the definitions below.

_________________________ of learning hold that an organism's nurture, or experience, is of more importance to development than its nature, or innate contributions. _________________________ are those which purport to explain acquisition by positing an innate biological endowment that makes learning possible. _________________________ are more powerful, all things being equal, than the other two theories, because they invoke both innate and experience factors to explain language learning.

Adapted from Larsen-Freeman and Long (1991)