Test for failed attention checks

Check whether participants failed attention checks, either choosing an immediate reward of 0 or choosing a delayed reward equal in face value to an immediate reward. If the participant was never offered either choice, a warning is given.

Usage

attention_checks(data, warn = F, ppn = F)

Arguments

data

A data.frame with columns val_imm, val_del and del_chosen, representing data from a single participant.

warn

Logical: give a warning for failed attention checks?

ppn

Logical: return proportions of attention checks participant failed, versus absolute numbers?

Value

Named vector counting the number of times the participant chose an immediate reward of 0 (imm_0) or chose a delayed reward equal in face value to an immediate reward (del_eq_imm).

Examples

if (FALSE) { # \dontrun{
# On a model
data("td_bc_single_ptpt")
attention_checks(td_bc_single_ptpt)
} # }