Are falsely taken by the child as grounds for (6)
I believe the answer is:
reason
'grounds for' is the definition.
'are falsely taken by the child' is the wordplay.
'falsely' is an anagram indicator.
'taken by' is a charade indicator (letters next to each other).
'the child' becomes 'son' (son is a kind of child**).
'are' anagrammed gives 'rea'.
'rea'+'son'='REASON'
'as' is the link.
(Other definitions for reason that I've seen before include "Logic of senora" , "Motive or right thinking" , "Justification; sanity" , "Deduce" , "use of wit" .)