CRC Research Methods 2

Question 1

A researcher wants to determine whether a new vocational training program causes better employment outcomes compared to no training. Which research design best supports a causal inference?

Accepted Answer

Randomized controlled trial

Answer

A randomized controlled trial uses random assignment to control for confounds, making causal inference possible.

Question 2

In a study measuring depression before and after a counseling intervention using the same instrument, which type of validity is most threatened by participants recalling their previous answers?

Accepted Answer

Internal validity due to testing effects

Answer

Testing effects (a threat to internal validity) occur when prior exposure to a measure influences later scores.

Question 3

Which sampling method divides the population into subgroups and then randomly selects participants from each subgroup proportionally?

Accepted Answer

Stratified random sampling

Answer

Stratified random sampling ensures proportional representation by randomly sampling within defined subgroups.

Question 4

A Likert-scale instrument produces which level of measurement?

Accepted Answer

Ordinal

Answer

Likert scales produce ordinal data because the distances between response options are not guaranteed to be equal.

Question 5

When a researcher selects participants because they are easily accessible rather than through a probability method, this is called:

Accepted Answer

Convenience sampling

Answer

Convenience sampling selects participants based on availability, limiting generalizability.

Certified Rehabilitation Counselor Test Practice Test

Certified Rehabilitation Counselor Test Practice Test

CRC Research Methods 2