This is a simple demo, modified from: https://github.com/desmond-ong/psychWidgets/tree/master/continuous_time_slider.
It is meant just to test the receive_data.php function.

We would like you to watch the following video, and rate using the slider, how the person in the video is feeling at every moment in time.
The left end of the slider indicates "Negative", and the right end of the slider indicates "Positive".
Please use the slider continuously throughout the video by clicking on the slider handle and moving it around.

 
You're finished - thanks for participating! Submitting to the receive_data script on the lab server.