It is between ____ months that most infants will show a developing awareness of object permanence

Your sister is happy that your niece loves to read and she reads constantly. What is a potential problem that can occur as a function of reading?

a. hyperopia b. protanopia c. myopia d. retinopathy

Placebos are used in experiments to a. control for the variability of individuals who tend to volunteer for research studies

b. control for the expectations of some research participants that they will improve just because they are in a research study. c. help determine whether an independent variable actually causes a statistically significant change in a dependent variable. d. make certain that the treatment and control group are randomly selected.