plotIIV: Plot intraindividual variability of reaction time
In IAT: Cleaning and Visualizing Implicit Association Test (IAT) Data

Plot intraindividual variability in reaction time, faceted by the four essential blocks.

1 2	plotIIV(my_data, data_type, block_name, trial_blocks, session_id, trial_number, trial_latency)

`my_data`	The raw dataframe to be used
`data_type`	A string of "raw" for no cleaning, or "clean" for cleaned data (no error trials, RT < 10,000ms, and RT > 180ms)
`block_name`	A string of the variable name for the blocks
`trial_blocks`	A vector of the four essential blocks in the seven-block IAT (i.e., B3, B4, B6, and B7).
`session_id`	A string of the variable name identifying each unique participant.
`trial_number`	A string of the variable identifying the trial number.
`trial_latency`	A string of the variable name for the latency of each trial.