There are several scientific theories about how the human mind processes information. One prominent one, evident in the voluminous number of books on sports psychology, is that the mind processes information in pictures.
In these publications, the reader is encouraged to use visualization techniques by closing their eyes and seeing or picturing themselves in their mind's eye performing some aspect of their life or their sport. The reader is told that visualization skills will help them improve their physical performance, achieve their goals in sports and life, and even allow them to enhance their self image and self esteem. These books are filled with case studies and testimonials from athletes who have utilized visualization techniques with great success.
Law enforcement training has embraced this theory of information processing and adapted it to mental preparation and conditioning. Based on information from the world of athletics, visualization techniques are seen as proven a method of ingraining the most desirable programs into the subconscious mind.
The carryover into the fields of firearms training and defensive tactics are immediately apparent and officers around North America are continually encouraged to use visualization techniques to enhance their skills. Officers, however, are rarely taught how to use these skills, only told that they should use them to improve their performance.
As much success as athletes and law enforcement officers have had with visualization techniques, there's a problem with this theory of mental processing. The problem lies in the reality that not everyone processes information visually.