Johan Conducts a Study Where He Follows the Same Children

Multiple Choice

Johan conducts a study where he follows the same children over a course of five years to see how the use of electronics impacts their vocabulary.He doesn't implement any manipulations into his research study;he simply observes the children's use of electronics and how it relates to their vocabulary development.What type of research design is Johan likely using?

A) longitudinal-correlational
B) cross-sectional correlational
C) longitudinal-experimental
D) cross-sectional experimental