Study on impact of caffeine consumption on anxiety among adults

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Rule #1: Fill out all questionnaires truthfully and conscientiously (i.e. take your time to fully comprehend questions and possible answers, to read scenario descriptions, to fill in text fields, etc.).

Rule #2: Participate in studies only when you meet the participation criteria.

Rule #3: Redeem Survey Codes only if you have earned them in compliance with the rules.

Rule #4: Redeem Survey Codes directly after completing a study.

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Rule #8: Do not let anyone use your user account to participate in studies.

Rule #9: Do not use rule violations by others to your advantage.

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Issue found:
The link to the study appears to be broken.

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Issue found:
The study has already been closed.

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Issue found:
There was no Survey Code at the end of the study.

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