Yes, same as every other MMR grouping in league. Separate from each queue, win game gain mmr, lose game lose mmr. Amounts gained and lost determined by odds of winning the game, mmr is hidden.
How do you get MMR in Aram?
Really short answer: Win games and your MMR goes up. Long answer: MMR stands for MatchMaking Rating. It is invisible, but it is the systems approximation of your skill based on your wins and losses. Riot does not have an interface to show MMR and no one is allowed to make an application that shows it.
Does Aram affect ranked MMR?
No it does not. all ranked queues, normals and aram all have separate mmrs in place.
Does dodging affect MMR LOL?
More from Blog of Legends Dodges dont affect your MMR, and therefore dont affect your LP gains. So you lose some LP in the short term to avoid a (likely) heavy LP loss later.
Does dodging reduce MMR?
You will not lose MMR for queue dodging.
Why is LP gaining so low?
League players are gaining low LP due to “internal changes to ranked system” in preparation for new season, Riot says. The LP gains should normalize after playing a few games. But low LP gains and dramatic LP losses may affect players ranks in the future. Season 11 will likely kick off in January 2021.