Does medication reduce anxiety? statistics?

An experiment that claimed to show that medication reduces anxiety proceeded as follows. The experimenter interviewed the subjects and rated their level of anexiety. Then the sybjevt 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 intrtviewed all the subjects again and rated their anxiety level. The medication group now has less anxiety. Psychologists said that the results were suspect because the ratings were not blinds. Explain what this means and how lack of blindness could bias the reoired results

“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 intrtviewed all the subjects again and rated their anxiety level. The medication group now has less anxiety.”

Is this a trick question ? If one group meditated and the other relaxed (what the hell is the difference in the first place), then which is the group that took the medication ????

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