Complex sentence: The WISC-V takes 45--65 minutes to administer and generates a Full Scale IQ (formerly known as an intelligence quotient or IQ score) which represents a child's general intellectual ability.
Split into simpler sentences: The WISC-V takes 45--65 minutes to administer. It generates a Full Scale IQ (formerly known as an intelligence quotient or IQ score) that represents a child's general intellectual ability.