I feel sure three tickyboxes for four options has redundancy, yet you certainly can't leave out "none" (as then you can't measure the people who didn't tick either box).
I guess you could do:
(radio) I've heard of the Akkadian Empire. (radio) I haven't. [tickbox] I've heard of Sargon of Akkad.
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(no subject)
Date: 2007-07-06 12:15 pm (UTC)I guess you could do:
(radio) I've heard of the Akkadian Empire.
(radio) I haven't.
[tickbox] I've heard of Sargon of Akkad.
But it's not very pretty :)