In Which of the Following Ways Are Correlational Designs Similar

Multiple Choice

In which of the following ways are correlational designs similar to quasi-experimental designs?

A) They both use nonrandom samples.
B) They both suffer from possible threats to internal validity.
C) They both use random assignment.
D) They both use small numbers of participants.
E) None of the above are ways in which correlational designs are similar to quasi-experimental designs.