Which of the following statements is true about carrying out experiments and quasi-experiments in social agencies?
A) The intervention being tested is almost always implemented in the intended fashion.
B) The control condition almost never is contaminated by interaction between clients in the experimental and control groups.
C) Practitioners might violate the research protocol for case assignment to make sure that clients receive the intervention being evaluated.
D) Outside agencies can be relied upon to refer enough clients to ensure obtaining a sufficient sample size.

Question

Which of the following statements is true about carrying out experiments and quasi-experiments in social agencies?​
A) ​The intervention being tested is almost always implemented in the intended fashion.
B) ​The control condition almost never is contaminated by interaction between clients in the experimental and control groups.
C) ​Practitioners might violate the research protocol for case assignment to make sure that clients receive the intervention being evaluated.
D) ​Outside agencies can be relied upon to refer enough clients to ensure obtaining a sufficient sample size.

Quizplus · Accepted Answer

Practitioners may have a vested interest in ensuring their clients receive the intervention being evaluated, which may cause them to violate the research protocol for case assignment. This can threaten the internal validity of the experiment. Options A, B, and D are not true statements about carrying out experiments and quasi-experiments in social agencies.

Which of the Following Statements Is True About Carrying Out