jspsych@8.4.0

Minor Changes

• #3741 c0da89493d819abe2120c8a1340b1a4048b11247 Thanks @jodeleeuw! - Add the jsPsych.adaptive module with createStaircase() and createInterleaved() for adaptive staircase procedures (n-up/m-down rules, unequal and shrinking step sizes, bounds, stopping rules including discontinue and ceiling rules for span tasks, and interleaved tracks that use the seeded random number generator). Procedures share a common AdaptiveProcedure interface, so later procedures (such as QUEST) can be added and interleaved with staircases without changing the existing API.

Patch Changes

• #3730 4a94750ace33e619f65564f0957ae3986fdca939 Thanks @SohamXYZDev! - Changes to trial.data made in on_start are now saved in the trial's data (#3727). This also changes when functions in a trial's data parameter are evaluated: they are now called right before the trial starts, like other dynamic parameters, so on_start sees their values. Before, they were called after the trial ended, when the data was saved. Values that depend on the response should be added in on_finish.

• #3722 f764a2b5117528d7d2b211edba48b7dd59a0e7e5 Thanks @rmz-oz! - save_trial_parameters now works with the parameters that are available in all plugins, such as css_classes and post_trial_gap. Before, they were ignored with a "Non-existent parameter" warning and their values were not saved to the data.

  Functions passed to these parameters are now called when the trial starts, before on_start, so on_start and the plugin see their values. Before, they were called when the parameter was used; for example, a function passed to post_trial_gap was called after the trial ended.