1. Prozac is an antidepressant drug prescribed to treat people suffering from depression. One way to test and see if Prozac is an effective drug to use for depression is to start an experiment. The first step of the experiment is to divide the test subjects into two randomly assigned groups, one group is the control group and the other group is the experimental group. The second step of the experiment consists of giving the control group the placebo, without informing them whether it is a placebo or an antidepressant, thus keeping them blind, and the experimental group Prozac, without informing them whether it is an antidepressant. depressant or placebo, which also keeps the experimental group blind. The independent variable in this case is Prozac, while the dependent variable asks and monitors each group, the control and the experimental one, to see which one feels better or feels less depressed.2. Correlational studies are a type of research in which the relationship between two variables, independent and dependent, is studied without carrying out experimental manipulations of the independent variable. The reason scientists can't test lead poisoning on people or animals because it's inhumane, so they find people already exposed to lead poisoning and from there they do research, called a "natural experiment", where something has already happened for case, or of course, in the world outside the laboratory. Another example of a natural experiment would be West Nile virus, or exposure to mercury, or mercury as an element, and the symptoms that come with it. Potential disadvantages of correlational studies are the difficulty of comparing two groups that were not randomly assigned. So, making it difficult… middle of the paper… the motor cortex contains a superior map of our body represented as a homunculus, which controls the motor movements of our body. Keep in mind that the left brain hemisphere and the right brain hemisphere apply to the motor movement of our bodies, the left hemisphere controls the right side of our body, and the right hemisphere controls the left side of our body. The main functions of the frontal lobe include motor movement, speech production, and the creation of abstract thoughts. The parietal lobe, located at the back of each frontal lobe, controls sensations of touch, body position, and speech understanding. The temporal lobe, located at the bottom of each cerebral hemisphere, controls hearing, smell, and face recognition. The occipital lobe, located at the back of the brain, controls what we see with our eyes, or for short, our vision.