This app allows participation in an ongoing research study at the Karolinska Institutet in Solna, Sweden working in collaboration with Seattle Children’s Research Institute in Seattle, WA. The study is geared towards infant twins and studies concepts of social cognition. The app contains consent information, instructions on how to participate, and a series of videos that act as the research stimuli. The app records a video of the participant and the participant is then allowed to opt-in to research by sending the video to the research team with an in-app option.