Perfectionists spend more time cooking, writing or even painting, but what they eventually finish is noticeably better than something created by other Sims. Perfectionists accept nothing shy of perfection.
Perfectionists always do neat actions automatically, such as making their beds after waking up, or cleaning their dirty dishes after eating. For this reason, Perfectionist is like the Neat trait, but with added benefits at the cost of time.
Nonetheless, perfectionists can also have the slob trait.