These very much tend to strongly correlate. You're definitely more confident in negotiating and counter-offering if you have 10x skill as your leverage.
That’s not at all the case. Five of us recently moved internally via a remapping and they gave us pay rises. I negotiated 15% more than the initial offer, everyone else took the initial offer. Roughly same ability.
Indeed the only reason I could do this was because the new salary ranges were shown thanks to pay transparency.
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> You're definitely more confident in negotiating and counter-offering if you have 10x skill
Not if high performers underrate their skill, and under-performers overestimate their skill, both of which studies suggest is true.
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Just because you may have leverage does not mean that you're wise enough in negotiation skills to use that leverage effectively.