After their first big fight, Andrew and Janet spent time talking about their future as a couple. This is consistent with the finding that difficult situations increase the "sense of being in this together."*

Examine the effects of long-term and extreme stress on children's ability to learn. What brain structures are involved? How are they affected by stress?

What will be an ideal response?

Which of the following is true concerning "twin study" research findings?

A) Identical twins and fraternal twins share similarly high IQ correlations. B) Fraternal twins have more similar IQ scores than identical twins. C) Identical twins have more similar IQ scores than fraternal twins. D) Identical twins raised together have less similar scores than identical twins raised apart.