The spren betrayed us, it's often felt. Our minds are too close to their realm
That gives us our forms, but more is then
Demanded by the smartest spren,
We can't provide what the humans lend,
Though broth are we, their meat is men.
- 9th Stanza of Listener Song of Spren
Yes I think Parshendi are closer to the Cognitive Realm than men, and this characteristic would probably be passed down through interbreeding.