Amber was given a Stanford-Binet intelligence test. Her mental age was determined to be 27; her chronological age is 18. Amber's IQ is

__________ is a statistical approach to determining how many concepts are measured by a set of questions.

Fill in the blank(s) with the appropriate word(s).

Erik Erikson saw the major challenge of middle adulthood as that of

a. intimacy versus isolation. b. identity versus role diffusion. c. integrity versus despair. d. generativity versus stagnation. e. industry versus inferiority