I think you do affect and have an effect. �It seems likely affect is a verb and effect has "an" or "the" in front of it which makes it part of a prepositional phrase, I think.

Original Mamma, I haven't read the book "the misdiagnosis of gifted children" but it is often recommended for mothers wanting to feel a little better informed about how giftedness and problems overlap and present separately. �This is usually recommended reading for parents early in the process before asking professionals. �

Youth lives by personality, age lives by calculation. -- Aristotle on a calendar