Which stage in Piaget’s theory of cognitive development best describes the infant s/child’s interaction with the world through action and purposeful manipulation of objects?

Which of the following statements is true of cocaine?

A) It dilates the arteries of the heart. B) It spikes the blood pressure. C) It decreases the heart rate. D) It thins the blood.

What type of neurons fire if a monkey observes another monkey engaging in an action?

a) magnetic neurons b) mirror neurons c) sensory neurons d) motor neurons