PSYCHOLOGIX® studies are conducted at our affiliated clinics in Florida, Arizona and elsewhere and at major universities and medical centers in the United States and Europe. Leading academic institutions where PSYCHOLOGIX® studies are conducted include:   The Mayo Clinics Harvard University Medical School Stanford University School of Medicine Dartmouth-Hitchcock Medical Center Duke University School of Medicine Vanderbilt University School of Medicine New York University Medical Center Baylor University College of Medicine University of California, Los Angeles, School of Medicine   We have also conducted studies at major research facilities in Argentina, Austria, Belgium, Chile, Denmark, England, Finland, France, Germany, Holland, Italy, Japan, Luxembourg, Spain, Sweden, and Switzerland. Some of these are first ever studies including a five-year, random sample of the Italian population to establish prevalence of cognitive decline in the course of "normal" aging and neurologic disease.