Has anyone read this? It's by David Keirsey, and I'm well into the chapter about Artisans (SPs). I didn't actually realise that there was that much different between MBTT and KTT, but apparently there is. For example, Keirsey looks at observable behaviour, while Myers is more concerned with cognitive processes. In that respect, MBTT is closer to Jung. But perhaps this idea would mean that you could be of a different temperament to your type in MBTT. I dunno though.