Everyone have a particular affinity to one of them in particular ; Clairovoyance , Clarasentinence , Clairaudience etc but some people are born with their abilities already heightened .
As one trains his or her Psychic abilities , One will notice that they have a more particular predisposition towards one of them. They are not hereditary . Most people's abilities are just laying dormant and different people have different alignments to difference of them .
A person who wants to gain the gift of any other one that is aligned with can do so with practice , I believe.
I have also heard that as one progresses in ability , Some people find that their abilities change and switch from one affinity to another as one progresses with one lifetime .
Well , to sum up , they are not hereditary