Stroop

The stroop effect was an effect that was made popular by its discoverer John Ridely Stroop, which is used in psychological examples  to introduce or explain certain things in the human brain due to the result of this test, being that the variation of colors with a word meaning a different color, slows your time more since you try to read the word not the color. The results of this is a slower time than the one of you saying the word with the correct color on it, showing the difficulty the brain encounters while doing this since it first tries to assort the problems it is encountering then you can finally think it and say the word since it has to process the word and the color, and which one does it want you to say. We did this experiment and class and there was an obvious difference in time between the time of the normal text with the normal color, and then changing the color with the different word, making it a perfect example of how it works. People who have not yet learned to read, have less problems doing this since their brain does not encounter the problem of processing the word and the color, making it faster for their brain, therefore the results will have an obvious difference between the one who can read and the person who cannot read. People get shocked when they do the test for the first time since they think an easy task like naming a colour will not take them much time, but they finish realizing the difficulty of this task.

http://www.wisegeek.com/what-is-the-stroop-effect.htm

Pygmies

The Bambuti Pygmies were a tribe of Africa that was isolated from all civilization and had no contact with other people until Colin Turnbull, an anthropologist that was studying civilizations in Africa, encountered this tribe and realized something real interesting, publishing some books on these observations and his discoveries. He had a Phd and had a kind of rough childhood, he saw many things and swore to defend and help out people who were needed and were minorities, in his attempts to study little tribes in Africa he discovers something really crucial about perception and the human mind, such as that humans learn about all the tricks in perception, such as things appearing smaller when they are further away from the human eye, etc. Things such as how a buffalo looks further apart compared to how it looks really close,  the Bambuti Pygmies had not seen anything from long perspective since they were surrounded by trees and could not see things on a long perspective and when they saw things far away they got really scared, doing this Colin Turnbull learned that people learn that things further away are the same thing although they look smaller than what you are accustomed to see. This was a crutial and really important observation on the subject of perception and what it consist of, on how everybody see things on a different way. This further helps understand the human brain and what how we learn certain things, things that we think we have from birth, but in fact we have learned to see things in certain ways.