Feels concern about alien attitudes (7)

I believe the answer is:

mindset

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'attitudes' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'feels concern about alien' is the wordplay.
'feels concern about' becomes 'minds' (I am not sure about this - if you are sure you should believe this answer much more).
'alien' becomes 'et' (extraterrestrial).
'minds'+'et'='MINDSET'

Can you help me to learn more?

(Other definitions for mindset that I've seen before include "attitudes and values" , "convictions" , "thinking normally" , "fixed attitude" , "Characteristic mental attitude" .)

I've seen this clue in The Daily Express.

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