The most promising research in discovering ways to slow the aging process is investigating ______

Which of the following supports the claim that language learning is special?

a. typically developing children in all cultures acquire language b. language is a very complex system c. some aspects of language are perceived categorically, not continuously d. language is used to communicate meaning

What type of design follows the same group of people over time and collects data on two or more occasions?

a. survey method b. longitudinal method c. cross-sectional method d. correlational method