Socially important behavior can be changed deliberately. The preceding chapters describe basic principles of behavior and how practitioners can use behavior change tactics derived from those principles to increase appropriate behaviors, achieve desired stimulus controls, teach new behaviors, and decrease problem be- haviors. Although achieving initial behavior changes often requires procedures that are intrusive or costly, or for a variety of other reasons cannot or should not be continued indefinitely, it is almost always important that the newly wrought behavior changes continue. Similarly, in many instances the intervention needed to produce new patterns of responding cannot be implemented in all of the envi- ronments in which the new behavior would benefit the learner. Nor is it possible in certain skill areas to teach directly all of the specific forms of the target behav- ior the learner may need. Practitioners face no more challenging or important task than that of designing, implementing, and evaluating interventions that produce behavior changes that continue after the intervention is terminated, appear in rele- vant settings and stimulus situations other than those in which the intervention was conducted, and/or spread to other related behaviors that were not taught di- rectly. Chapter 28 defines the major types of generalized behavior change and de- scribes the strategies and tactics applied behavior analysts use to achieve them.