Another argument for why guns should be banned on campus is young adults' brains does not fully mature despite their physically mature appearance. Darby Dickerson, former dean of Texas Tech University School of Law, is an expert in higher education law and policy and is an elected member of the American Law Institute. She states that researchers have discovered that human brain change significantly during adolescences, and are not fully developed until about 24, with regard to thinking ability and judgment. Also, high-risk alcohol and other drug use among student population have long-term negative effects on brain development, which leads to poor decision making. According to the National Survey on Drug Use and Health (2015), 58 percent of full-time college students ages 18 to 22 drank alcohol in the past month compared with 48.2 percent of other persons of the same age. Researchers also estimated that each year, 1825 college students between the ages of 18 and 24 die from alcohol-related unintentional injuries; 696000 students between the ages of 18 and 24 are assaulted by another student who has been drinking (NIAAA). Therefore, granting college students access to guns will pose increased risks of incidents of self-injury, accidental shootings and even murders.Furthermore, multiple individuals with firearms will negatively affect law enforcement officers' response during emergency situations. It will lead to confusion over identifying attackers among many people who are carrying guns which they claim to protect themselves. Also, without training, armed individuals may harm innocents in an attempt to halt a bloodshed.