They make some general observations from a lot of their literature on having a better cognitive outcome as people age: absence of chronic disease, complex and intellectual stimulating environment throughout life, a flexible personality style, high intellectual status of the spouse and persisting high perceptual processing speed. Again, from their longitudinal work, they kind of support the finding of the other study or kind of go along with it that people who doing well younger in life tend to do well cognitively older in life.