How do I collect continuous ratings from subjects as they view video stimuli?

Sometimes you want to know how your participants are feeling continuously throughout an experiment, rather than just at discrete timepoints.

Are there any tools available to collect this type of data?

continuous-rater is a standalone web-app (that can interface with Amazon Mechanical Turk) that is built exactly for that purpose. It allows you to customize the basic structure to tailor the app to your experiment, and collect continuous data on any rating dimension(s) you specify.

Visit to learn more and download the app.