And yet, despite the SAT being so studied for, it remains a pretty good IQ test overall, and SAT-V or the GRE verbal parts OK. I think that’s because there are so many words (500k+ in English, and the GRE-V has no compunction about mining the obscurest just to f—with you), and you would have to study so many in order to meaningful inflate your scores (because after all, while there may be only a hundred ‘vocab words’ on any given SAT test, you don’t know which hundred). Let’s see… Here’s an interesting-looking reference: “How Many Words Do We Know? Practical Estimates of Vocabulary Size Dependent on Word Definition, the Degree of Language Input and the Participant’s Age”, Brysbaert et al 2016
an average 20-year-old native speaker of American English knows 42,000 lemmas and 4,200 non-transparent multiword expressions, derived from 11,100 word families. The numbers range from 27,000 lemmas for the lowest 5% to 52,000 for the highest 5%. Between the ages of 20 and 60, the average person learns 6,000 extra lemmas or about one new lemma every 2 days.
So, if you wanted to boost your score from the mean to the 95th percentile, that seems to imply that you’d have to memorize 10,000 ‘lemmas’ (“Uninflected word from which all inflected words are derived”). That’s a big number, and then you have to ask how much work that would be.
If you did this in the optimal way with spaced repetition (ignoring the time it takes to figure out the 10k you want to memorize in the first place or the time to construct the flashcards or any penalty from needing to inefficiently cram them for an upcoming SAT instead of life-long efficient review), which of course still few students do, as spaced repetition systems remain a niche outside of medical school & foreign language study, the SuperMemo rough estimate is a long-term investment of 5 minutes per flashcard, and we’ll assume 1 lemma = 1 flashcard. That means you have to invest 10,00 * 5 = 50,000 minutes or 833 hours of studying! Meanwhile, hardly anyone is doing more than 8 hours of studying for the SAT as a whole (among the kids I knew at a prep high school, many didn’t even do a weekend course, which would entail about 8 hours of classwork & study). 833 hours for vocab alone would be insane.
That’s why people generally learn vocab from passive exposure rather than targeted study. Because no one, not even the most teacher’s-pet student, wants to do that. And so vocab measures keep working.
And yet, despite the SAT being so studied for, it remains a pretty good IQ test overall, and SAT-V or the GRE verbal parts OK. I think that’s because there are so many words (500k+ in English, and the GRE-V has no compunction about mining the obscurest just to f—with you), and you would have to study so many in order to meaningful inflate your scores (because after all, while there may be only a hundred ‘vocab words’ on any given SAT test, you don’t know which hundred). Let’s see… Here’s an interesting-looking reference: “How Many Words Do We Know? Practical Estimates of Vocabulary Size Dependent on Word Definition, the Degree of Language Input and the Participant’s Age”, Brysbaert et al 2016
So, if you wanted to boost your score from the mean to the 95th percentile, that seems to imply that you’d have to memorize 10,000 ‘lemmas’ (“Uninflected word from which all inflected words are derived”). That’s a big number, and then you have to ask how much work that would be.
If you did this in the optimal way with spaced repetition (ignoring the time it takes to figure out the 10k you want to memorize in the first place or the time to construct the flashcards or any penalty from needing to inefficiently cram them for an upcoming SAT instead of life-long efficient review), which of course still few students do, as spaced repetition systems remain a niche outside of medical school & foreign language study, the SuperMemo rough estimate is a long-term investment of 5 minutes per flashcard, and we’ll assume 1 lemma = 1 flashcard. That means you have to invest 10,00 * 5 = 50,000 minutes or 833 hours of studying! Meanwhile, hardly anyone is doing more than 8 hours of studying for the SAT as a whole (among the kids I knew at a prep high school, many didn’t even do a weekend course, which would entail about 8 hours of classwork & study). 833 hours for vocab alone would be insane.
That’s why people generally learn vocab from passive exposure rather than targeted study. Because no one, not even the most teacher’s-pet student, wants to do that. And so vocab measures keep working.