The heritability of intelligence is lowest among genetically ________ individuals who have been raised in ________ environments.

__________ seem(s) to be a particularly effective context for promoting peer interaction skills

A) Child care B) Preschool C) Parent–child play D) Cartoon characters

Some research supports the idea that approximately 40% of our happiness is determined by a person's thoughts and actions. Which of the following is used to support this view?

A) Identical twins are more similar in their level of happiness than fraternal twins. B) Identical twins are less similar in their level of happiness than fraternal twins. C) Being kind to others can increase our levels of happiness. D) We have a set point to which we return after experiencing emotional arousal. E) People have life circumstances out of their control that impact happiness.