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Providing this information is optional, but having it could help us to answer some interesting questions. It is only intended to help us learn about the groups of people who participate in our experiment, not individuals. For example, perhaps people of a certain age group tend to participate in this experiment more than others. Or, the results we get from women may be different than those of men. So, we hope you will help us by providing this information. Press the "Continue" button when you are ready to begin.Thanks.