Ethnicity:

Primary Investigator: Prof. Michael Ranney, Ph.D., Graduate School of Education, UC Berkeley We are currently conducting research about how people use numbers with regard to base rates that involve a great variety of issues and we would like you to consider aiding us by participating in this study. This form is provided to help you make an informed decision as to whether or not you would like to take part in these investigations. Below is information regarding what you can expect. Please read it carefully; if you have any questions, please contact ranney at berkeley.edu. Once you have finished reading the form, if you would like to participate, check the box below and click on the "Submit" button. Your participation in this research is voluntary. You are free to withdraw your consent and discontinue participation in this study at any time. If you participate throughout this study, you may refuse to answer any question(s) that might make you feel uncomfortable (e.g., by closing your browser window or typing "I refuse" in the appropriate box). PROCEDURES: If you agree to take part in my research, you will answer several questions on a wide variety of topics. We would like you to make estimates and decisions about the topics in quantitative terms. You may be asked to list reasons for your estimates. The information will be presented on paper or computer and require written responses. RISKS AND BENEFITS: There are no foreseeable risks associated with this study beyond those encountered in routine examination and testing. CONFIDENTIALITY: All information about you and your responses will be identified only through a randomly assigned identification number. Once we have completed the process of collecting data, the key linking your email address to this number will be destroyed. At this point, it will be impossible to link you to your responses. All information will be kept in a locked room. FOLLOW-UP: Following your participation in this study, you will receive some feedback. By checking the box below and clicking on the "Submit" button, you are agreeing to the following: "I have read and understood this consent form, and being 18 years of age or older, I agree to participate in this study. I understand that my participation is voluntary and that I am free to withdraw my consent and discontinue participation in this study at any time. If I participate throughout this study, I may refuse to answer any question(s) that might make me feel uncomfortable."

I verify that I am at least 18 years of age, and I agree to the Research Consent terms.