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Sampling bias? Could those who enroll in online college or continuing education courses be more highly motivated for some reason? Or perhaps those who take onli
by msluyter 17y ago
Sampling bias? Could those who enroll in online college or continuing education courses be more highly motivated for some reason? Or perhaps those who take online courses are savvier technologically and/or better at self directed study, both of which probably correlate to doing better overall?
- steveplace 17y agoYep. Perhaps they should put it into two different buckets, namely voluntary and compulsory. The kids that fail english have to take a 6 week credit makeup whereby they sit in front of a computer and do nothing. Could be the kid and not the medium.
- aristoxenus 17y agoI didn't read the NYTimes article, but the report itself claims to "Include only studies with random-assignment or controlled quasi-experimental designs". They go on to list some remaining caveats on page xvii, and I can think of one or two, but I would imagine data suffering from the source of bias you describe was one of the first things they set out to discard.