3 An experimenter Interviewed subjects and rated their level of anxiety Then the subjects were randomly assigned to two groups The experimenter taught one group how to meditate and they meditated daily for a month The other group was simply told to relax more At the end of the month the experimenter interviewed all the subjects again and rated their anxiety level The meditation group now had less anxiety Psychologists said that the results were suspect because the ratings were not blind Explain what this means and why this is an important consideration in this experiment