Which is true according to research on parent-child attachments?

Which is true according to research on parent-child attachments?
 
  a. Parental responsiveness to an infant does not appear to be a determinant of the type of attachment formed by the infant.
  b. It is not possible for an infant to attach securely to its father unless it first establishes a secure attachment with its mother.
  c. Infants who are securely attached to both parents are more socially competent than those who are securely attached only to mother.
  d. Attachment to mother predicts later social competence, while attachment to father does not.

Question 2

_____ refers to an efficiency of information processing that appears with practice.
 
  a. Terminal drop
  b. Automatization
  c. Factor analysis
  d. The Flynn effect

Question 3

Fathers
 
  a. are less likely to challenge children during play than mothers.
  b. who are supportive contribute to better cognitive, social, and emotional development in their children
  c. who are unmarried tend to be very involved parents
  d. tend to avoid engaging in playful behavior with their children

Question 4

With regard to experience, Sternberg believes that
 
  a. the level of intelligence of a response can be accurately assessed only after extensive experience with the tasks.
  b. experience with a task has no impact on ability to intelligently respond to the task.
  c. there is no way to assess familiarity with a task.
  d. the creative component of intelligence is best measured by a person's responses on novel tasks.