<prompt> Translate the following text to EnglishMfano huu uligunduliwa kwa mara ya kwanza wakati mwanasayansi wa karne ya 19 alipojaribu kuunda uso wa kawaida wa jinai kwa kufanya mchanganyiko wa picha za picha za watu wengi.  <response>: This effect was first noticed when a 19 th century eugenicist tried to create an average criminal face by making a photographic composite of lots of mug shots. 