2.2.3. Reaction Time Experimental Design
I. Identify a Problem or Question:
Can the reaction of an individual be affected by other external factors?
II. Introduction:
Reaction time refers to the amount of time it takes for a person to process and react to a stimulus. It is important in everyday activities, such as driving, and sports, but not much experiment is conducted to research on this matter. Reaction time with its practical implication can leads to great consequences,e.g. drivers with slower reaction rate can pose a grave danger to themselves and other drivers. The reacting process starts with sensory neurons converting a stimulus into electricalchemical signal, which flow through the length of the sensory neurons, series of interneurons, and then reaches to the motor neurons. Generally, the motor neurons will turn the signal into a muscle contraction or a gland excretion. Reaction that involve only the receptor, the spinal cord, and the effector, is faster than those that require more complicated processes in the brain. Reactions that only travel to, through, and from the spinal cord is called reflexes; withdraw hand from a hot stove after touching can be an example of a reflexion. There are factors that contribute to the effect on reaction time of a person, such as gender, fitness, fatigue, time of day, alcohol consumption, personality, or type of stimulus.
III. Research and Current Ideas:
In an experiment on reaction time, conducted on March 30th, 2004 by Saul Sternberg, proposes potential methods to test for reaction time, as well as lists out possible error that could occur
during a test. His muscle reflex test involves having two levels pulled by each hand, left for no and right for yes, through a series of auditory and visual question. In the vocal response test, he will have the experimental subject answer yes or no to auditory or visual questions. There were many differences during the test that could cause a