'Isms' tend somehow to determine outlooks (8)

I believe the answer is:

mindsets

'outlooks' is the definition.
(I know this)

'isms tend somehow' is the wordplay.
'somehow' is an anagram indicator.
'isms'+'tend'='ismstend'
'ismstend' with letters rearranged gives 'MINDSETS'.

'to determine' is the link.

I've seen this clue in The Guardian.

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