Experiments use random assignment to avoid which of the following?
A)Random selection
B)Selection effects
C)Carryover effects
D)Demand characteristics

Question

Quizplus · Accepted Answer

Random selection refers to randomly sampling participants from a population, which is not necessarily related to the avoidance of selection effects. Carryover effects refer to the influence of a previous treatment or condition on the subsequent treatment or condition, which can be controlled through counterbalancing. Demand characteristics refer to participant behavior that is influenced by the expectation of the experiment, which can be minimized through the use of double-blind procedures. Random assignment, on the other hand, is used to avoid selection effects, which occur when differences in the characteristics of participants in different groups confound the experimental manipulation. Random assignment helps ensure that the groups are equivalent at the outset of the experiment, making it more likely that any observed effects are due to the manipulation and not to preexisting differences between the groups.

Experiments Use Random Assignment to Avoid Which of the Following