When we cannot randomly assign people, we should start looking for "nonequivalent" control groups to allow us to make "reasonable guesses."

Question

Quizplus · Accepted Answer

When random assignment is not possible, using nonequivalent control groups is a common method to attempt to account for differences between groups, allowing for more reasonable comparisons and guesses about the effects of an intervention or variable of interest.

When We Cannot Randomly Assign People, We Should Start Looking