[walshemj]

isn't this just bias some of the original time and motion studies that the act of changing something effected the results found?

The example my course gave was first increasing lighting production went up then when the reduced the lighting production went up not down as expected

[thomasz]

https://en.m.wikipedia.org/wiki/Hawthorne_effect

[walshemj]

Thankyou that was the one, my production engineering classes where a longtime ago

[arkades]

Only the third study would be open to that criticism. Which is fair, except that it’s unreasonable to ignore the context provided by the other two.