If a child is encouraged to read more sight words in exchange for iPad time, which method is being used?

In this scenario, the method being employed is differential reinforcement of high rates (DRH). This approach involves reinforcing a behavior when it occurs at a high rate or frequency. In this case, the child is being encouraged to read more sight words, and for each increase in the number of words read, they receive more iPad time. This effectively reinforces the child for engaging in the desired behavior (reading sight words) and motivates them to do so more frequently.

Differential reinforcement of high rates is particularly effective for increasing behaviors, as it sets an expectation for the individual to engage in the behavior more often than they previously did. By providing a tangible reward, such as iPad time, the child is likely to put forth more effort into practicing reading sight words, thereby increasing their proficiency.

The methodology of providing reinforcement based on the frequency of a targeted behavior aligns perfectly with the principles of DRH, distinguishing it from other methods that focus on different dimensions of behavior change.