Which theory suggests that people seek optimum levels of activation for their body and nervous system with the right mix of activities preventing boredom or overstimulation?

The fact that, when we look at an object, each one of our two eyes receives a slightly different image of the object is known as __________

a) binocular disparity. b) binocular inversion. c) convergence. d) stereophonic vision.

You have a sexually transmitted infection that is destroying your immune system, leaving you very weak and susceptible to other diseases. You have

a. HPV infection b. HIV infection c. congenital syphilis d. any of the above