The one-group posttest-only design includes all the following faults EXCEPT A) the treatment condition is given to all research participants. B) the participants' motive of positive self-presentation affects the independent variable. C) there are no controls for extraneous variables. D) there is no control group for a comparison.

Question

Quizplus · Accepted Answer

The one-group posttest-only design's main faults include applying the treatment to all participants (A), lacking controls for extraneous variables (C), and not having a control group for comparison (D). The participants' motive for positive self-presentation (B) is not a fault specific to this design but rather a potential issue in many research designs, particularly those involving self-report measures.

The One-Group Posttest-Only Design Includes All the Following Faults EXCEPT