delta: delta
In thibault-gajdos/RTconflict: What the Package Does (One Line, Title Case)

This function compute classical delta plots

1	delta(rt, compatible, sujet = NULL, quant = c(1:10)/10)

`rt`	Response time
`compatible`	compatible vs incompatible trials, 'c' for compatible trials, 'i' for incompatible
`sujet`	subject names. Default is NULL
`quant`	quantiles

1 2	delta(df$rt, df$compatible, df$sujet, quant = c(1:5)/5) Return L(p) proportion of errors among the pth first quantile of response time (computed on all responses)