IntroductionCognitive psychology is the study of mental representations that guide behavior. One way to investigate a brain function is through an experiment called Visual Search. Ulric Neisser's visual research is one of the most famous methods for studying a particular brain function, which in this case is perception and identification. More formally, it is a type of perceptual task that requires scanning a visual environment for a given goal among other similar or distinct features. Ulric Neisser created his study on visual search in 1964 with the aim of developing cognitive psychology. The purpose of his experiment was to see whether round or angular letters affected the ability to locate a letter "Z" (Neisser, 1964). His method involved first asking a person to scan a list (consisting of fifty items) to find a specific target. The list was computer generated, each list was a set of round letters or angular letters with the letter "Z" mixed in randomly. The subject peered through a window at a box with the list inside. Then he lit up the list and started the timer. After the subject scanned the list and found the target, he turned off the timer. The results were that the subjects took less time to find the letter “Z” in the set of round letters instead of corner letters. It did not specify the age of the participants or the time of day each subject took the test. Based on Ulric Neisser's study, researchers are conducting an experiment with few changes to the original experiment. For this experiment, researchers will create their own list of round letters and corner letters and randomly insert the letter “K” into each list. The PURPOSE of this experiment is to see if it is round or angular......in the center of the paper......02 = 8.415.48 – 4.90 = 0.582 = 0.33642.18 – 4.90 = -2.722 = 7.39848.63 – 4.90 = 3.732 = 13.91294.11 – 4.90 = -0.792 = 0.62412.67 – 4.90 = -2.232 = 4.97295.10 – 4.90 = 0.202 = 0.043.50 – 4 .90 = -1.402 = 1.962.40 – 4.90 = -2.502 = 6.254. 25 – 4.90 = -0.652 = 0.422514.70 – 4.90 = 9.82 = 96.044.25 – 4.90 = -0.652 = 0.42255.88 – 4.90 = 0.982 = 0.96042, 53 – 4.90 = -2.372 = 5.6169 6.30 – 4.90 = 1.402 = 1.965 0.51 – 4.90 = 0.612 = 0.37215.15 – 4.90 = 0.252 = 0.06250.4624 +3.9601+0.5041+1.0201+0.0009+0.6241+0.144+0.2916+1.2321+0.0676+2. 3104+0.0961+0.7921+11.2896+0.6561+0.3249+1.4161 +0.5776+2.5281+ 0.0036 0.0225+2.56+0.2025+8.41+0.3364+7.3984+13 ,9129+0.6241+4.9729+0.04+1.96+6.25+0.4225+96.04+0.4225+0.9 604+5.6169+1.96+0, 3721+0.0625√28.3016/19 = 1.22 √152.5466/19 = 2.83Appendix VII Continued: Standard Deviation Calculations