I've had dealings with hundreds of every type, and some of every type had childish aspects in their behaviour and or had eccentricities. "Childlike" is a term that belongs with words like intuitive, feeling, irrational and judging; they all have dictionary meanings that shouldn't be really applied to information processing. And "weird" is a very subjective term that usually comes from within circles that consider themselves the norm, thus making outsiders subject to ridicule. Let's create a new term called "typism" (a milder form of racism?).

a.k.a. I/O