Robots and Doris became confused (8)
I believe the answer is:
androids
'robots' is the definition.
(android is a kind of robot)
'and doris became confused' is the wordplay.
'became confused' indicates anagramming the letters (I've seen 'become confused' mean this (I've seen this in other clues)).
'doris' is an anagram of 'roids'.
'and'+'roids'='ANDROIDS'
(Other definitions for androids that I've seen before include "Automatons that resemble humans" , "Human-looking robots" , "Robots in human form as in science fiction" , "Communication devices" , "Robots that resemble humans" .)