Inclinations of spider changing jobs (15)

I believe the answer is:

predispositions

I'm a little stuck... Click here to teach me more about this clue!

'inclinations' is the definition.
(predisposition is a kind of inclination)

'spider changing jobs' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'spider' is 'predis' which is present in the answer.
'jobs' could be 'positions' (position is a kind of job) and 'positions' is located in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).

'of' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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