Take into account son cried when upset (8)
I believe the answer is:
consider
'take into account' is the definition.
(thesaurus)
'son cried when upset' is the wordplay.
'when upset' indicates an anagram.
'son'+'cried'='soncried'
'soncried' is an anagram of 'CONSIDER'.
(Other definitions for consider that I've seen before include "Think carefully about" , "Attend to" , "Look at someone or something thoughtfully" , "Deem to be, believe" , "Reckon, deem" .)