Range observed in clinical psychology (4)
I believe the answer is:
alps
'range' is the definition.
(mountain range)
'observed in clinical psychology' is the wordplay.
'observed in' indicates the answer is hidden within the clue.
'ALPS' can be found hidden inside 'clinical psychology'.
(Other definitions for alps that I've seen before include "high points" , "European mountain range" , "European mountains" , "Slopes" , "Laps around mountains" .)