Image via Wikipediaand briefly.
I just finished round 1 of Interactive Metronome and had my assessment. I really did improve a lot over my first scores which were well over 100 on all counts:
Clapping with Both hands averaged 24 ms (miliseconds) within the beat and 44% of the claps were on time! Best score ever!
Other scores involving the hands were way up as well!
Tapping with both toes, heels, and right/left toe were in the 40's.
My balance was a little wacked so my tapping with my right foot was OK around 39 and tapping with my left toe was off -- up at 74. But I could feel my balance was a little wacked.
So overall: bilateral ms avg was 48.5 and my adjusted ms avg is 37.6.
But, the real surprise in all this data was that during my best tests where I was clapping with both hands, is that I could feel the beat and I could tell when I was on time. I never really have felt the beat before. I don't think that people have really tied arhythmia (lack of rhythm) to developmental disorder. All the musical neurology sites seem to treat it as a nice to have feature in our lives and not as a foundational skill for reading, attention, focus, coordination, etc.