Final answer:
Moderator variables can influence judgmental accuracy, except for when they have no impact.
Step-by-step explanation:
The statement that is FALSE about moderator variables of judgmental accuracy is C) Moderator variables have no impact on judgmental accuracy. Moderator variables are factors that can influence the strength or direction of the relationship between judgment and accuracy. Contextual factors like time pressure or information availability can serve as moderator variables. Additionally, individual differences such as cognitive abilities can act as moderator variables in judgment processes.