Photo rating

Welcome to the photo rating survey. For this survey, you will be shown photos of people and you will be asked to indicate if they are smiling, frowning or adopting a neutral expression.

This survey is being conducted for as a "proof of concept" for a research study. Your answers will be kept completely anonymous and will only be presented in aggregated form (e.g. % of respondents who indicated that the person in this photo was smiling). By proceeding you aknowledge that your responses will be used in subsequent work.

There are 178 photos in this survey. If you feel like finishing the survey, then please do so, but you may also exit at any time and your responses will be saved (and will still be useful). When you exit, please either close the window or click "resume later." Do not exit and clear your answers!