If a positive nature raises a Stat by 10%, and a negative nature reduces a Stat by 10%; what does a neutral nature do?

Question

For example, Adamant raises attack, but decreases Special Attack.

Answer 1

A neutral nature like serious gives 10% to a stat (like speed) and decreases the same stat by 10%, which means it does nothing

Source

Hope I helped

Answer 2

In the end, nothing.

Technically it increases a stat by 10%, then decreases it b 10%.
In the end, the nature doesn't boost or decrease any stat.

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Source: knowledge

Answer 3

Basically it does nothing as others had previously stated. It gives a 10% increase to the targeted stat and a 10% decrease to the stat, ultimately surving no real advantage.

Hope I helped!