home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Illusion - Is Seeing Really Believing?
/
Illusion - Is Seeing Really Believing (1998)(Marshall Media)[Mac-PC].iso
/
mac
/
ILLUSION
/
SROCK_TX.CXT
/
00299_Text_ref26t.txt
< prev
next >
Wrap
Text File
|
1996-12-31
|
2KB
|
52 lines
Despite these and similar
remarkable findings and
ingenious theorizing,
questions remain about their
interpretation. First, it is not
quite correct to refer to the
experiments on search as
indicating pre-attention, for
the simple reason that the
subject is attending to the
entire array of elements. The
task requires it, although it is
true that the subject does not
attend sequentially to each
separate element when pop out
occurs. Recent research by
Arien Mack, Christopher
Linnett, and me and by
Mercedes Ben Av, Dov Sagi, and
Vochen Braun at the Weizman
Institute of Science in Israel
indicates that "pop out,"
grouping, and texture
segregation do not occur if
rigorous attempts are made to
eliminate voluntary attention
to the array. Indeed,
NothdurftΓÇÖs research suggests
that it isnΓÇÖt a unique feature by
itself or a cluster of features
against a background of
distractor elements that leads
to pop out, texture segregation,
and grouping, but rather the
contrast or difference between
the item or cluster at its
interface with the background.
Moreover several experiments
have now shown that elements
that would seem to be complex
because they combine several
features do pop out. Arien Mack
has even found that oneΓÇÖs own
first name pops out among some
words of equal length used as
the distractor. Apparently,
then, many so-called features
within a unit can be combined
with one another without
attention being selectively
focused on that unit.