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Dvorak vs Qwerty - overall layout efficiency

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The overall effort is computed with the effort values show in the table below.

Based on these figures and modern tetxs, you get that Dvorak requires 23-25% less effort than Qwerty and Colemak requires 0.5% to 5% less effort than Dvorak.

By ignoring data which is the same for all layouts such as key press effort or the Shift, Space and New Line keys you can come up with misleading statements such as Dvorak is 60% (or even 100%) more efficient than Qwerty. But now you know better.

However, my figures are not really scientific and they probably vary from person to person. So it would be more correct to say that Dvorak is 20-25% better than Qwerty and Colemak is 0-8% better than Dvorak.

	Thumbs	LPinky	LRing	LMiddle	LIndex	RIndex	RMiddle	RRing	RPinky
Key Press	1.00	2.75	1.60	1.05	1.05	1.00	1.00	1.50	2.50
Finger Stretch (distance of one key)	1.00	2.75	1.60	1.05	1.35	1.25	1.00	1.50	2.50

Bottom Row Key	2.00	(* Key Stretch Effort)
Same Finger Press	2.00	(* Key Press Effort)
Same Hand	0.25
Same Hand and Jumping a Row	2.00
Same Hand and Reverse Order	2.00

 

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