PDM: choice difficulty + (gain v loss)

Data and MatLab analysis code from 3 experiments looking at perceptual decision making under risk in a motion extrapolation task. These experiments probe behaviour across various loss vs. gain scenarios (see excel spreadsheet for designs), for different levels of dfficulty (curvature in EV func) and for differnt values of parameter k that controls unpredictability of dot path. Also included is analysis code to generate figures used in associated paper. Read the readme file for instructions on how to replicate analyses.