Health-care researchers in Texas are conducting a randomized field experiment on the effects of providing free health care to people over 65 years old.One of the logistical issues with this study,however,is that people in the control group tended to drop out of the study at higher rates since they were not benefiting from the treatment.What do sociologists call this phenomenon?
A)selection bias
B)reflexive control
C)differential attrition rates
D)social desirability bias

Question

Quizplus · Accepted Answer

Differential attrition rates refer to the phenomenon where participants in one group (in this case, the control group) drop out of a study at a higher rate than others due to factors such as not receiving treatment. This can create bias in the study results, as the remaining participants may not be representative of the original population. Selection bias refers to a situation where participants are not randomly assigned to groups, reflexive control involves individuals altering their behavior due to being observed or studied, and social desirability bias refers to individuals responding in a way they believe is socially desirable rather than truthfully.

Health-Care Researchers in Texas Are Conducting a Randomized Field Experiment