alright: (single movement)
Used in concepts like:
"It is your right."
"I'm alright."



ALRIGHT (double movement)
Used in concepts like:
Deaf people have "rights."
Are you "alright?"






Note: I tend to see the double motion when people mean "rights" plural. When they mean "right" singular I see the single movement.
I use the single movement in response to how are you?
But I see either the single or double movement if someone asks someone else if
they are
"alright."
Also I notice if a person is signing fast and or casually the double movement will tend to be dropped.
If you notice this sign being used differently in your area, please do let me know.