Exhibitionism is a disorder of the __________ phase of the normal courtship sequence

By what age do infants typically have vision as good as that of normal adults?

a. at birth c. by 1 year of age b. by 2 months of age d. by 2 years of age

When Maria's father teaches her a label for an object, he looks at the object and points to it. These behaviors help establish ___, which is essential for social learning

a. emulation b. joint attention c. shared values d. goal-directed problem solving