Which of the following is not a technique to ensure random assignment to the conditions of an experiment?
A) flipping a coin
B) using a random number generator
C) letting participants chose
D) drawing numbers out of a hat

Question

Quizplus · Accepted Answer

All the other techniques (flipping a coin, using a random number generator, drawing numbers out of a hat) are randomization methods that ensure each participant has an equal chance of being assigned to each condition. Allowing participants to choose would not ensure equal representation in the conditions and could potentially introduce biases into the study.

Which of the Following Is Not a Technique to Ensure