The term functional analysis (FA) was used by Skinner (1953) to denote empirical demonstrations of cause-and-effect relations between environmental events and behavior (Hanley, Iwata & McCord, 2003). Iwata et al (1994) developed a functional analysis technology that allows behavior analysts to determine whether problem behaviors are sensitive to a variety of environmental events by rapidly altering those events in short periods and observing whether the behaviors occur.  In conditions where problem behavior is higher and separated from a control (i.e., free play) condition, a functional relationship has been demonstrated; however, in some cases, there is little no differentiation across conditions, suggesting that the problem behavior is either automatically maintained and/or has multiple social functions. This study sought to further evaluate the patterns of behavior within test conditions to confirm or refute possible social functions for a young boy with autism exhibiting self-injurious behavior (SIB).  A functional analysis was conducted on SIB for this participant and was deemed undifferentiated after 92 total sessions, suggesting either an automatic function or both automatic and social functions.  We then sought to clarify whether this behavior was automatically, socially, or multiply maintained by looking at data patterns within establishing operation (EO) and stimulus reinforcements (SR) periods of each condition.  Data analysis of SIB in these periods resulted in a more detailed understanding of the functions of his SIB.  Specifically, SIB occurred at a higher frequency in the SR component than the EO component, which confirms Hagopian, Rooker and Zarcone’s (2015) research which states that in approximately 20% to 25% of cases, SIB occurs independent of social consequences.  Future research should consider evaluation of other topographies of behavior (e.g., aggression, destruction, elopement) and data patterns that suggest socially-maintained problem behavior that may serve automatic functions.