Check-in/check-out (CICO) is widely used as a Tier 2 intervention within school-wide positive behavior interventions and supports. Evidence suggests that traditional CICO is primarily effective for students demonstrating problem behavior maintained by adult attention. A growing body of research has investigated function-modified CICO to address behaviors maintained by other consequences. The purpose of this review was to examine the evidence-base for function-modified versions of CICO to identify (a) the procedures used to assess students’ behavior function and (b) the types of modifications and additions to CICO that have been empirically evaluated. We systematically reviewed 11 studies that examined the effects of function-based CICO. Researchers determined behavior function using a combination of direct observations and indirect assessments. These methods were more involved than a brief behavior screening. The modifications and additions to traditional CICO included changes that were functionally relevant and functionally independent. Based on the results of this review, more research is needed before function-based CICO can be considered an evidence-based practice. Moreover, the extent to which educators can implement function-based CICO without researcher support is also unknown. The implications of this review are discussed in terms of future research and practice
