some of my students are, ironically, frustrated by excessive ambition: they try to look for too many kinds of mistakes at once, thus failing to notice just about anything because their attention is spread too thinly.
suggestions:
* collect a lot of data. take many practice tests, solve official guide problems, etc., and then make a tally of the # of errors of each type that you failed to see (and the # of times you detected 'errors' that weren't actually errors).
* the next time you do a group of problems (whether on a practice test or just random problems), keep ONE OR TWO of the most persistent errors in mind. scan the sentences with an eagle eye for those ONE OR TWO errors, looking only perfunctorily for the other errors. if you do this, you will almost certainly detect those ONE OR TWO errors every time you see them.
* do the same for other error types on later sets of problems, once again ONE OR TWO error types at a time.
* eventually you'll start nailing them all more consistently.
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if you've ever played a sport, been a dancer, etc., you know that you can only concentrate intently on one or two physical skills at a time. that truth is unchanged for mental skills such as those required by the gmat.
hth!
Ron has been teaching various standardized tests for 20 years.
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Quand on se sent bien dans un vêtement, tout peut arriver. Un bon vêtement, c'est un passeport pour le bonheur.
Yves Saint-Laurent
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