According to Freud, the developmental stages are
A) oral, anal, pre-operational, and formal.
B) infancy, oedipal, childhood, puberty.
C) social emotional, oral, phallic, sensorimotor.
D) oral, anal, phallic, latency, and genital.
Question 2
One fundamental assumption of item response theory is that each item is constructed so that it measures only one trait or ability. This assumption is known as:
A) the one-trait assumption.
B) single ability measurement.
C) unitary attribute theory.
D) unidimensionality.