process_choice_data: Process Choice Data
In jdtrat/pRpt:

This function takes the data column from the output of read_prpt and runs four functions, binding the results in a dataframe for easy manipulation:

get_phases which separates the three phases of the task, saving them to the environment phase, which is initialized behind the scenes.
get_icons which gets the icon information shown to the subject per round.
get_choices which gets the choice the subject makes.
get_reinforcers which gets the monetary reinforcement the subject is shown after choosing an icon.

1	process_choice_data(data, final_icon_rating = FALSE)

`data`	The data output from `read_prpt`
`final_icon_rating`	LOGICAL: FALSE by default for the majority of PRPT tasks that don't ask for final icon ratings. TRUE, and the phases will return those trials

A dataframe 150 rows and 16 columns:

phase: The phase these icons were displayed in (constant for each phase object).
round: The round number these icons were displayed in, specific to the phase.
icon1: The icon presented in the first order position.
icon1Group: The group mapping for the icon presented in the first order position.
icon1Prob: The probability of getting a monetary reinforcement by choosing icon 1.
icon1Sign: The relative sign of the reinforcer (positive or negative) by choosing icon 1.
icon2: The icon presented in the second order position.
icon2Group: The group mapping for the icon presented in the second order position.
icon2Prob: The probability of getting a monetary reinforcement by choosing icon 2.
icon2Sign: The relative sign of the reinforcer (positive or negative) by choosing icon 2.
option: The option the subject chose.
chosen_icon: The icon the subject chose.
chosen_icon_group: The (payment weighting) group the chosen icon corresponds to.
chosen_icon_prob: The probability that the chosen icon leads to a monetary reinforcement.
reinforcer: The amount (dollars) the subject was reinforced with after making a choice.
cumulative_reward: The cumulative reward since the beginning of the game (phase 1, round 1).