Shaping is a procedure primarily used for which of the following?

Shaping is a behavioral procedure that involves reinforcing successive approximations of a target behavior. This means that, instead of requiring the individual to perform the desired behavior all at once, the learner is rewarded for making small steps toward the behavior. This technique is particularly useful for developing new skills or behaviors that may not currently exist in the individual's repertoire.

In the context of the choices provided, shaping can be used to gain compliance by reinforcing behaviors that lead to greater cooperation or adherence to requests. Additionally, it can encourage social interaction by rewarding gradual improvements in communicating or engaging with others.

The effectiveness of shaping lies in its ability to break down complex behaviors into manageable parts, making it applicable in various settings, from behavior modification in educational environments to therapeutic interventions in social skill development. Therefore, both gaining compliance and encouraging social interaction are appropriate applications of shaping, which supports the inclusion of both options in the selected answer.