The Brain That Couldn’t Remember
nytimes.com
nytimes.com
In this case she was actively destroying data after finding contradictory evidence. It is hard for me to conceive of a situation where that would be appropriate, especially where there other researchers cannot duplicate her experiments.
I agree with the author's comments that this seems like retroactive action taken when it came to light that there might be other factors involved (the other lesion, etc). Or to prevent re-interpretation of her findings that might point out things she ignored/hid.