​Your authors suggest that several factors may explain gender roles and differences. They include biology, socialization, and a child’s own efforts. Which word best encapsulates your author’s view of the contributions of these three factors to such understanding?

​Cooperation, empathy, and altruism are all examples of _______________ behavior.

​A subset of a population is called a(n) _______________.

​Erik is having difficulty saying his “Rs,” which is particularly problematic given his first name. When he tries to say “ERIK,” it ends up sounding like “EWIK.” His parents have him working with a speech therapist to help him overcome this small problem. Technically, Erik’s problem lies with mispronunciation of a(n)

​Jeffrey is a three-year-old who is beginning to make connections between people’s thoughts, intentions, and behaviors. According to Wellman (2002), Jeffrey is developing

​Several different factors may contribute to a child being more likely to behave in an altruistic manner. What is NOT one of these factors?

Intersensory _______________ is the theory that an infant’s sensory systems are attuned to information that is presented simultaneously to different sensory modes.

​What is the current status of the use of genetic engineering to help treat illnesses that are caused by defective genes?

​Which of the following provides some evidence that there is, in fact, a genetic component to handedness?

​The direction of a relationship-that is, whether two variables move in the same direction or in opposite directions-is indicated by the _______________ of the correlation coefficient.