In Chapter 3, the book mentions that reflexes are the most basic form of elicited behavior. A reflex is a simple, automatic response to a stimulus. Some reflexes only involve one gland or set of muscles, like when an individual salivates in response to a drop of lemon juice. Other reflexes require more muscles, like the startle response. For example, if you see a baseball heading in your direction, most individual's automatic reflex would be to get out of the way. The orienting response is when we automatically position ourselves to facilitate attending to a stimulus. This is when we hear a sudden or unfamiliar noise behind us, and we turn around. There is also the flexion response where we move our hand or foot away from something hot or sharp.
Some individuals have quick reflexes, while others are not up to speed. Below is a link to a website where you can practice your reflexes and see how quick you are! The computer will program the results immediately and have them available for you.