Social psychology had its origins in

Which of the following statements regarding infants' attachment to their fathers is TRUE?

A) Similarities between mothers' and fathers' parenting behaviors is the reason why infants develop similar attachments to them. B) Infants are less likely to form secure attachments with their fathers because fathers are less likely to feed them. C) Researchers have studied attachments between fathers and infants as often as they have studied mother-infant attachments. D) Infants tend to develop the same types of attachment bonds with their fathers as they do with their mothers.

The Spearman-Brown prophecy formula is used to correct for

a. an over-estimate of the original correlation b. an under-estimate of the original correlation c. the lack of any degrees of freedom d. having previously eliminated the alpha error