Get random intercepts for subjects and items

Source: R/check_mixed_design.R

Get error terms from an existing data table.

check_mixed_design(data, dv = 1, sub_id = 2, item_id = 3,
  formula = NULL)

Arguments

data

the existing tbl
dv

the column name or index containing the DV
sub_id

the column name or index for the subject IDs
item_id

the column name or index for the item IDs
formula

the formula to run in lmer (defaults to null model dv ~ 1 + (1|sub_id) + (1|item_id))

Value

a list of parameters

Examples

des <- check_mixed_design(fr4, "rating", "rater_id", "face_id")
str(des[1:4])
#> List of 4
#>  $ grand_i : num 2.93
#>  $ sub_sd  : num 0.936
#>  $ item_sd : num 0.661
#>  $ error_sd: num 1.07