Professor Wong Measured the Intelligence and Temperament of a Group

Multiple Choice

Professor Wong measured the intelligence and temperament of a group of preschoolers.He plans to follow the same group of participants over time and collect similar data when the children are in 3^rd grade,6^th grade,and 9^th grade.This is an example of which type of research design?

A) Sampling design
B) Experimental design
C) Longitudinal design
D) Double-blind experiment