Source : Webster's Revised Unabridged Dictionary (1913)

Sociologic \So`ci*o*log"ic\, Sociological \So`ci*o*log"ic*al\a.
   Of or pertaining to sociology, or social science. --
   {So`ci*o*log"ic*al*ly}, adv.

Source : WordNet®

sociological
     adj : of or relating to or determined by sociology; "sociological
           studies"