I'm not trying to make a serious point here and I don't know enough about the study to say that it was unethical, but this sounds terrifying and kind of like a bad prison experience.
> This is the first study of its kind to establish the relationship between short-term memory and prolonged stress. In the case of the mice, that meant repeat visits from a larger, nasty intruder mouse.
> Mice that were repeatedly exposed to the aggressive intruder had a hard time recalling where the escape hole was in a maze they’d mastered prior to the stressful period.
> This is the first study of its kind to establish the relationship between short-term memory and prolonged stress. In the case of the mice, that meant repeat visits from a larger, nasty intruder mouse.
> Mice that were repeatedly exposed to the aggressive intruder had a hard time recalling where the escape hole was in a maze they’d mastered prior to the stressful period.