The Relationship Between Size Constancy and the Muller-Lyer Illusion
In our day to day lives we use the concept of size constancy countless amounts of times. Weather its seeing a far off friend approaching us, or walking a few blocks to our car. This concept is a necessity t0 our survival in the fast paced world we live in.
One flaw to this concept is it is only fool proof when being applied to three dimensional objects. When it comes to two dimensional objects problems occur. Another big problem arises when there is no depth cues. Depth cues are essential to helping us estimate the distance between us and the object we are looking at. An alternate explanation for this picture below is: With the fins some of the lines are longer than others. This could cause some people to believe the middle lines are longer than the other two.
One flaw to this concept is it is only fool proof when being applied to three dimensional objects. When it comes to two dimensional objects problems occur. Another big problem arises when there is no depth cues. Depth cues are essential to helping us estimate the distance between us and the object we are looking at. An alternate explanation for this picture below is: With the fins some of the lines are longer than others. This could cause some people to believe the middle lines are longer than the other two.
Below is another example of a Muller-Lyer illusion. In this example we think that the line on the left is much longer than the line on the right, but in all reality they are the same length.
Below I posted two links. The first of the two is a link to a youtube video that gives a good visual representation of a Muller-Lyle illusion. The second is a website that helped me gain a better understanding of Muller-Lyler illusions, and helped me form my own page on the topic.
Links:
https://www.youtube.com/watch?v=SPsHZttEQ5E
http://psychology.about.com/od/sensationandperception/ss/muller-lyer-illusion.htm
Links:
https://www.youtube.com/watch?v=SPsHZttEQ5E
http://psychology.about.com/od/sensationandperception/ss/muller-lyer-illusion.htm