Obviously it would be more beneficial if you know what most of the
words definitions, that was meant to be implicit. In my situation I
already learned the 4000 GRE words a year ago, but now that I am in a
medically based graduate program I cannot possibly read enough to keep
the words fresh, this would be an easy way to keep the words fresh. I
figured after a period of time I would add maybe 300 words that I am
not totally comfortable with in to the list. Then when those words
popped up I would be compelled to find their definitions if I did not
know them. This is precisely why I stated it would better if the
database was malleable to the user because not everyone will benefit
from the same list.
The comment about real world applicability had much more to do with
the vocabulary learning rather than the increase in working memory
benefits. Although, I do think it would show a smaller, maybe more
subtle benefit.
Another boon that I have been ruminating over but was unable to
properly articulate last night was the chunking aspect. It's human
nature to chunk things that are in lists. Most of the GRE words are
much more abstract than simple objects and often are slightly more
complex emotions. Developing ways to chunk abstract words/thoughts not
only shows mastery but would also enhance creativity.