The phrase "ceiling effect" means that something has reached its highest point or limit and cannot go any higher.
Sentences with «ceiling effect»
There is demand from those interested in public mental health for a measure suitable for monitoring mental well - being that does not show ceiling effects in population samples. (hqlo.biomedcentral.com)
Its distribution was near normal and the scale did not show ceiling effects in a population sample. (hqlo.biomedcentral.com)
In some cases, there are ceiling effects where bright students are already scoring near the top and can't show huge gains year after year. (educationbythenumbers.org)