Jeremy
Explorer
In my totally unsupported humble opinion, they age as their base creature. An elf who becomes a lich still thinks and (un)lives as an elf. His intellect and maturity still mature at the same rate.
So yes, a formerly human lich will gain intelligence faster than a formerly elven lich. The human still thinks like a human and learns at that hurried pace.
So yes, a formerly human lich will gain intelligence faster than a formerly elven lich. The human still thinks like a human and learns at that hurried pace.