The two main types of designs used in all research on human behavior are __________ and __________.
A. observational; experimental
B. correlational; experimental
C. observational; correlational
D. variable; observational
Answer:B
The two main types of designs used in all research on human behavior are __________ and __________.
A. observational; experimental B. correlational; experimental C. observational; correlational D. variable; observational