Pavlov placed meat powder in the mouths of the dogs, and they began to salivate. Pavlov's student noticed that after a few days the dogs began to salivate at the sound of the student's footsteps. The salivation to the sound of the footsteps was a _______

Which of the following are two major contributing factors of why young drivers have a greater incidence of accidents and deaths?

a. inexperience and risk-taking behaviors b. difficult temperament and an inability to foresee future consequences c. egocentrism and a lower degree of personal fables d. hyperactivity and hormone imbalances

By studying the results of experiments such as those that use the visual cliff apparatus, scientists generally conclude that children's perceptual abilities develop somewhat in advance of their understanding of risks associated with certain

actions. For example, a child typically develops the ability to perceive depth before she understands that crawling out on the "cliff" side of the visual cliff is dangerous. Indicate whether the statement is true or false