A behаviоrаl prаctitiоner puts an interventiоn in place with the intention of reducing a 2nd grader’s disruptive vocal stereotypy. After 2 weeks, the child is emitting vocal stereotypy in 87% of intervals rather than 92%. Basically, there was a change in the behavior, but it was not enough of a reduction to be considered meaningful. Which of the 7 dimensions of ABA is not adequately represented in this study, considering the lack of meaningful change in the behavior?