<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.changamoto moja ya utafiti wa kijamii ni kwamba watu wanaweza kubadilisha tabia zao wakati wanajua kuwa wanazingatiwa na watafiti.  <response>: one challenge of social research is that people can change their behavior when they know that they are being observed by researchers. 