yes but i'm not so sure it's that categorical, albeit even theories that are concerned with over excitability (high sensitivity) claim a categorical split between normal and high sensitivity. but it seems to be a statistical split, that is meaningless to the individual. fewer people might be in between the normal range and the high range, but some are.
anyhow the more intelligent you are, the more sensitive (overly excitable) you are. excitability concerns everything, not just emotions. it highlights all organs of the mind and blends them. for a thinking type, there will be this paradoxical struggle of his temperament being negligent about emotions (schizoid) and his emotions not allowing to be ignored at the same time. whereas in less intelligent thinking types, exclusion of emotion is achieved completely. so the smart thinking or feeling types are like a third type, because they can't easily be nailed down typologically. their thinking will be philosophically and their feeling will be systematic, consistent. whereas average intelligence comes with either a cold pragmatic thinking or a whimsy feeling. i don't take this from a book. you can really observe all of that in people here.
but your observation would be construed by having a confused understanding of who has which functions, which is common here. what i said can be observed in people with dominant perception. blending concerns the axillary functions (the preferred one and the other possibility), in their case that's T and F. for types dominant in judgement, there would be a blending of S and N, which is more difficult to observe, at least via internet. but with even higher blending, the dominant and the shadow will blend as well (T and F, for the J dominant).
over excitability does not correlate properly with IQ measurement, only roughly, due to the temperament bias of these tests. but overexcitably is the true factor of real world intelligence, that difference between nuking the world or improving it. it affects how much meaning one's mind creates. for example doing nothing but playing chess has no meaning and is therefore not all that intelligent, no matter how high the level of chess skill. the over-excitable mind isn't that focused one just one function, since it blends everything. blending is one key of what is appreciated as genius. the over excitable mind is less repetitive and more creative and that pays out in time, in how the over excitable mind develops faster and more importantly further in terms of stages of handling complexity of perspectives (regarded as states of psychological development). it develops further because it breaks habits. habits block development. in simpler words, the factors of blending and creativity imply constant questioning of self- and world-view, which creates a wisdom to guide your skills.
just one of many examples of developmental psychology is this exploration of the factor of integration http://en.wikipedia.org/wiki/Positive_Disintegration
integration is the manifestation of what i call blending. first there is intuitive or subconscious blending, which is recognizes as "you are a weird impractical bird", then later in life the mind differentiates it, then synthesized it, creating what is recognizes objectively by psychology and called integration, or complexity of psychological structure.