4 ms·
I am affraid this might be https://en.wikipedia.org/wiki/Hawthorne_effect https://en.wikipedia.org/wiki/Hawthorne_effect I don't see anything controlling for t
by zby 7y ago
I am affraid this might be https://en.wikipedia.org/wiki/Hawthorne_effect https://en.wikipedia.org/wiki/Hawthorne_effect
I don't see anything controlling for that in the setup:
"The present study examined interleaved practice in a large number of classes at multiple schools over a period of five months, and all instruction was delivered solely by teachers who had no prior association with the intervention or the authors."
- 0xab 7y agoThere's a control group. Both groups were watched by the experimenters. Not only that, the same teachers had students in both groups in different classes.
- zby 7y agoBut the control group would know that nothing has changed. The group testing the new method would feel the excitement - the control group would not.