Maddison, who scored five goals in 42 games for Coventry, told RedTV: "I would like to think I am an attacking midfielder who can bring creativeness to the team, bring assists and goals and an attacking threat.
"I like to play in the number 10 shirt but am also happy to play off a side or a bit deeper if I am needed.
"I am a player who likes to get fans off their seats. I like to bring some attacking flair to the team.
"I had a few chats with some of the Scottish boys at Norwich. I spoke to Steven Whittaker about Aberdeen and have spoken to a few of the lads about Scottish football in general.
"They all spoke about it really highly and as I say after speaking to the manager and getting the opinions of others, it was a no-brainer to come to play my football at Aberdeen.
"I had offers from League One clubs, I could have gone there but I feel like I have already ticked that box and done that. I felt that coming to the Scottish Premiership and a club the size of Aberdeen, it was going to be really good for me. As I say I am looking for more experience and exposure."