Does the Competitive Ability activate if an ally lowers the Ability-bearer's stat?

Question

I bred a Vaporeon with Water Absorb and gave it Baby Doll Eyes to activate my Milotic's Competitive ability, but I didn't see a message nor did I see it's SpAtk rise. Does it work like Unburden in that it doesn't actually show the ability working or does it not activate when an ally lowers one of it's stats?

Answer 1

Competitive is only activated bye a foes stat lowering move.
Allies do not activate it.