Table 4 presents the continuous exponential results. The exponential models closely align with the connected-linear models. The continuous function indicates an upper asymptote of .38 for genetic contributions to stability and .33 for environmental contributions to stability. For the genetic contribution, this asymptote is reached very early in life, by age 8. In comparison, the increase in the environmental contribution to stability occurs slowly throughout the lifespan. At age 15, the expected environmental contribution is only .17 correlation units, and it continues to .25 by age 30 and continues to rise past age 60 (expected environmental contribution = .31).
