If your level of psychological discomfort is comparable to a level of physical discomfort that would cause you to see a doctor or dentist, you should consider seeing a psychologist or a psychiatrist

Carolyn Rovee-Collier and her colleagues conducted research to see whether infants demonstrate the spacing effect. The results of this research showed that

a. infants and adults responded similarly; both remembered better when their practice was distributed over time. b. infants and adults responded similarly; both remembered better when they learned the material in one concentrated session. c. infants remembered better when practice was distributed; adults remembered better when they learned the material in one concentrated session. d. infants remembered better when they learned the material in one concentrated session; adults remembered better when practice was distributed.

At what age do children generally learn to use prepositions?

a. 12–18 months b. 18–24 months c. 24–36 months d. 36–48 months