The mannequin went ahead and posed (8)

I believe the answer is:

modelled

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'posed' is the definition.
The answer and definition can be both to do with perception as well as being past participle verbs.
Perhaps they are linked in a way I don't understand?

'the mannequin went ahead' is the wordplay.
'the mannequin' becomes 'model' ('model' can be a synonym of 'mannequin').
'went ahead' becomes 'led' (I've seen this in another clue).
'model'+'led'='MODELLED'

'and' acts as a link.

Can you help me to learn more?

I've seen this clue in The Globe and Mail.

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