Data from an experiment investigating differences in reaction times across three tasks of increasing complexity.
Participants reacted to a square or a circle (variable shape)
appearing on the screen by
pressing the space bar whenever they saw any shape (block
reaction).pressing the space bar whenever they saw a specific shape (block
goNoGo).pressing a key when they saw one of the shapes and a different key when they saw the other one (block
discrimination).
Format
A data frame with 2,404 rows and 4 variables:
- submission_id
A unique identifier for each participant.
- shape
The shape presented on the screen.
- block
The task of how to react to a shape.
- RT
The measured reaction time in milliseconds.
Examples
if (FALSE) {
# fit a linear model using 'brms'
# regress reaction time as a function of the block
fit <- brms::brm(RT ~ block, data = MC)
# check encoding scheme used in the model
get_cell_definitions(fit)
# get draws for the reaction block
extract_cell_draws(fit, block == "reaction")
# compare the goNoGo block with the reaction block
compare_groups(fit, block == "goNoGo", block == "reaction")
}