[net.cog-eng] Human Interfaces: Is Right Justification Bad

cline@dartvax.UUCP (Greg Cline) (04/26/85)

Can anyone offer pointers to articles/research proving that
text that is left-justified and right-justified slows the
reader down?  The hypothesis is that uneven gaps between
words slow down the mind.

Greg Cline
Graduate Computer and Information Science
Dartmouth College
Nathan Smith Building
Hanover, NH 03755
uucp:   decvax!dartvax!cline
CSnet:  cline@DARTMOUTH

henry@utzoo.UUCP (Henry Spencer) (04/29/85)

> Can anyone offer pointers to articles/research proving that
> text that is left-justified and right-justified slows the
> reader down?  The hypothesis is that uneven gaps between
> words slow down the mind.

Note that "right justification" and "uneven gaps between words"
are unrelated except on low-quality output devices.

The last I heard on the right-justification war was a strong suspicion
that the answer is the same as the one for the serif war:  people read
more quickly and accurately when the text follows the style they are
most familiar with.
-- 
				Henry Spencer @ U of Toronto Zoology
				{allegra,ihnp4,linus,decvax}!utzoo!henry

rh@mit-eddie.UUCP (Randy Haskins) (06/13/85)

I would expect that right justification is bad because your mind
keeps track of what line you are on in the text by noting the
pattern of words and white space.  The most conspicuous sort of
white space is the one at the end of the line.  If they are all
the same, your mind has to work harder to keep track of where
you are.  I seem to notice that I lose my line more often when
the text is RJ than otherwise.  Perhaps people should test this
theory with text that is RJ but not LJ (of course, it would take
the mind a while to realize that it was getting clues from
the left side.)  
-- 
Randwulf  (Randy Haskins);  Path= genrad!mit-eddie!rh