The glasses alone probably cost abt $30,000 for the sample. Over half needed replacements??? This is not a high yield intervention.
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Replying to @Russwarne
Well, might be better than HeadStart for which there seems to be no detectable benefits at all!https://www.acf.hhs.gov/opre/resource/head-start-impact-study-final-report …
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Replying to @KirkegaardEmil @Russwarne
To read about these things, one kinda has to take pleasure in the absurd amounts of money being spent on nothing.
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Replying to @KirkegaardEmil
It's a racket. We spend millions on garbage programs in this country, yet I can't get a research grant?
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Replying to @Russwarne @KirkegaardEmil
Some children can't affort glasses to be able to *see* properly, and you complain about your life? Time to reflect on your priorities.
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Replying to @DinaPomeranz @KirkegaardEmil
I didn't say giving kids glasses was bad. There are good reasons to do that. But it's not an effective way to raise school achievement.
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Replying to @Russwarne @KirkegaardEmil
You said we waste money on this and I can't get grant money. Also: study shows it does matter. Even if it contradicts your prior.
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Replying to @DinaPomeranz @Russwarne
Study doesn't show that. It's a small non-randomized no control group follow up with marginal finding. I'll take a bet on non-replication.
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Replying to @KirkegaardEmil @Russwarne
It has a control group, just not a randomized one. As you know in such diff-in-diff estimates, it hinges on parallel trend assumption. 1/n
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Specifically:Is there reason to believe that absent intervention, kids with good eye sight would have learned slower than kids with bad? 2/n
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You aside from the obvious reason? https://www.ncbi.nlm.nih.gov/pubmed/19127804
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