Betazoids

Betazoids are a race of humanoid telepaths originally from the Federation planet Betazed. Most Betazoids develop their telepathic abilities in adolescence, although a few individuals are born with their telepath fully functional. These troubled individuals generally require extensive therapy to survive in society, since they lack the ability to screen out the telepathic noise of other people. Betazoids are incapable of reading Ferengi, Breen, or Doptherian minds, possibly a result of the anomalous four-lobed construction of the brains of these races.