Article about family's philosophy (8)
I believe the answer is:
thinking
'philosophy' is the definition.
(thesaurus)
'article about family's' is the wordplay.
'article' becomes 'thing' (I've seen this before).
'about' is an insertion indicator.
'family' becomes 'kin' (synonyms).
'thing' enclosing 'kin' is 'THINKING'.
(Other definitions for thinking that I've seen before include "Fancying" , "Reasoning in the mind" , "Rational" , "Take" , "Thought" .)