Psychology:

Explain the rationale for using twins to study intelligence.

Why do you think mental illness is associated with obesity?

What is a common risk associated with alcohol?

Which of the following is an important function of child-directed speech? (a) it captures the infant’s attention and maintains communication. (b) it reduces the occurrence of infantile amnesia for the earliest memories of infancy. (c) it reduces the need for reciprocal interaction between caregivers and children. (d) it assists in prolonging rem sleep in infants.