Gathered information and got it wrong (8)
I believe the answer is:
inferred
'gathered' is the definition.
('infer' can be a synonym of 'gather')
'information and got it wrong' is the wordplay.
'information' becomes 'inf' (abbreviation for information).
'and' says to put letters next to each other.
'got it wrong' becomes 'erred' (to err is to do wrong or go wrong).
'inf'+'erred'='INFERRED'
(Other definitions for inferred that I've seen before include "Deduced by reasoning" , "'Concluded, judged from the facts (8)'" , "Conjectured" , "Rein Fred in because he deduced" .)