If sufficiently varying features make it clear that a
different lexical representation is involved, then the error is identified as a lexical commission (i.e., word replacement for RIDE-horse with a generic variant of RIDE).
[cut]
In contrast, more fluent signers may simply display
errors of lexical commission, reproducing alternate morpho-syntactic configurations because they have been able to process sentences more deeply and rephrase the words to sustain the sentence meaning. Table Table66 lays out our hypotheses about these on-line processing heuristics.
Type of error
Syntactic re-phrase
Morpho-syntactic alternation
Syntactic displacement or reversal
Morphological omission or alternation
Lexical omission or commission [cut]
Errors in the sentence reproduction task follow similar constraints as errors in natural language production. For example,
lexical commissions usually respect word category, and misarticulations are constrained to possible word formation.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4126373/