1. changed mask to a pure between-ss manipulation
2. changed temporal to a within-ss manipulation, i.e. "temporal_first"
3. record the temporal organization used in each tutorial section as a
separate column
Added additional practice content

1. expanded introduction to practice sections to give step by step
practice with sliders. changed question IDs accordingly.
2. added recording of temporal factor to test sections
3. changed tutorial button to continue when no response required
4. briefly disable submit button when no response required; changed
submit button disabling to use .prop instead of .attr