Based on information from your text, if a researcher designed an experiment to determine the effectiveness of CISD in reducing the incident of anxiety disorders, what would be a critical element in the experiment?

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Using a randomly assigned control group is a critical element in any experiment that aims to determine the effectiveness of an intervention. This helps to ensure that the differences between groups are not due to pre-existing differences and that the intervention is truly responsible for any changes observed. Including good dependent measures of self-esteem may be relevant depending on the specific aims of the study, but is not as critical as having a control group. A double-blind procedure may also be relevant in some cases, but is not mentioned in the text as a critical element for this particular experiment.

Based on Information from Your Text, If a Researcher Designed