Of course, excessive feedback on error can have a negative effect on motivation; teachers need to be sensitive to their students' reactions to correction. The amount and type of correction that is offered will also vary according to the specific characteristics of the students, as well as their relationship with the teacher and with each other. Children and adults with little education in their first language will not benefit greatly from sophisticated metalinguisticexplanations, but university students who are advanced learners of the language may find such explanations of great value. The immediate reaction to errors in an oral communication setting may embarrass some students and discourage them from speaking while others welcome such correction as exactly what is needed to help them notice a persistent error at just the moment when it occurs.