OptionalcontrastsA contrast per factor of the fixed-effects part: "contr.treatment" (default), "contr.sum", "contr.helmert" or
"contr.poly" (see LmerContrastName); the random-effects terms always use treatment contrasts. A name that
is not a variable of the fixed-effects part (a grouping variable alone included) gives the warning
variable 'B' is absent, its contrast will be ignored.
OptionallevelsThe order of the levels of a factor ({ A: ["c", "a", "b"] }), as factor(x, levels = ...) in R.
OptionalREMLWhether to minimise the REML criterion (default true) or the ML deviance (false). As in R's conditions, a
number is false for 0 and true otherwise; null and other values (the strings "TRUE", "FALSE" included)
are TypeErrors. The result's REML is the boolean.
Options of lmer. Only the keys below are accepted: R's
weights,offset,subset,naAction,na.action,control,start,verboseanddevFunOnlygive the Errorlmer: argument '<key>' is not supported, any other key a RangeError (a key whose value isundefinedincluded).