RESEARCH STUDY 6.2 Dr. Ewell, a Developmental Psychologist, Is Planning on Conducting a on Conducting

RESEARCH STUDY 6.2
Dr. Ewell, a developmental psychologist, is planning on conducting a study that involves watching children play together to determine how sharing behavior occurs in same-sex friend pairs compared with opposite-sex friend pairs.
-Refer to Research Study 6.2 above to answer the following question. Given the scenario above,Dr.Ewell is concerned that the children will behave differently because of the presence of research assistants.Which of the following could he do to address this concern?

A) Use a masked study design
B) Have two undergraduate research assistants make the observations instead of just one
C) Observe the same-sex friend pairs on the first day and the opposite-sex friend pairs on the second day
D) Hide a video camera in the daycare center and record the children playing without them knowing
E) All of the above