Not unusual types and not written by hand (5)
I believe the answer is:
norms
'not unusual types' is the definition.
The answer and definition can be both related to thinking as well as being plural nouns.
Maybe you can see an association between them that I can't see?
'and not written by hand' is the wordplay.
'and' becomes 'n' (common abbreviation for 'and').
'not' becomes 'o' (I've seen this in other clues).
'written by' means one lot of letters go next to another.
'hand' becomes 'rms' (I can't justify this - if you can you should believe this answer much more).
'n'+'o'+'rms'='NORMS'
Can you help me to learn more?
(Other definitions for norms that I've seen before include "Customary behaviour, the usual things" , "Standards of customary behaviour" , "They're usual or standard" , "Standards, averages" , "Social standards" .)