I. IntroductionSince the last decade of the 19th century, many experiments and approaches have been carried out to analyze which group of men or women had a faster reaction. These experiments focused on human response time, that is, the time required to perceive, evaluate and respond to a particular question, or to identify the object, color. Sometimes response time also shows how smart people are or how much information and knowledge they have. Franciscus Donders was the first scientist to analyze human response time. He tried to convince everyone that men and women had different response times (Donders, 1969). Zajdel (2007) also performed the same experiment and concluded that men reacted more quickly than women. Response time research focuses on reaction time. Jaworki (2011) states that response time is the sum of reaction time and movement time. There are two different types of reaction times: simple reactions and complex reactions. These complex reactions consist of a recognition reaction, a choice reaction and a discrimination reaction (Jaworki, 2011). The simplest is the simple reaction time during which movement is necessary for an observer to respond to the presence of a stimulus. An example of a simple reaction is when a person has to name the color in front of them. Recognition reaction time is more complex than simple reaction time because it requires the subject to press a button when one type of stimulus appears and withhold a response when another type of stimulus appears (Zajdel, 2007). For example, the subject may need to press the button when a green light appears and not respond when a blue light appears. In the chosen reaction time, each po...... middle of paper ......ment. The P value was 0.0099, which proved that men took less time to respond than women. This P value accepted my hypothesis. My result had this P value (0.0099) because men responded much faster than women. In other words, response time was affected by gender. Works Cited Deary, IJ2006. Age and sex difference in reaction time in adulthood: a health and lifestyle outcome in the United Kingdom. Psychology and Aging 21(1): 62-73. Donders, FC 1868. On the speed of mental processes. Translated by WG Kroster, 1969, Acta psychology 30: 412-431. Jaworski, J. 2011. Involution of simple and complex reaction times. Human Movement 2011Pedro, A. 2009. Normative Reaction Time for IAPS as a Function of Display Sex, Time. Behavioral Research Method 41.1: 184-91.Zajdel, R. 2007. Simple and complex reaction times. Computer in biology and medicine. 37.12