To provide a demonstration of the phenomenon, you can edit the picture of the dress by adjusting the contrast-I was able to find the point at which the dress changed color for me-it could make a pretty nifty classroom demonstration. BTW, I first tried cropping the image so that the background was completely eliminated-it didn't change when I did this. It also didn't change when I manipulated the background color against which I viewed the image.
Best, Leah On Fri, Feb 27, 2015 at 8:34 AM, Deborah S Briihl <dbri...@valdosta.edu> wrote: > This is the classic GilChrist study: > http://nwkpsych.rutgers.edu/~alan/Gilchrist_Science_1977.pdf > > It is a lightness and color constancy experiment > > In the experiment above, people looked through a peephole into a set up > which had 2 rooms. The front room was dark and the back room was lit. A > white card was placed in the dark room. If people saw the white card in the > dark room - they identified it as white but if they perceived it being in > the lit room even though it was in the dark room, they saw it as grey. > > Deborah Briihl, PhD > Dept. of Psychology and Counseling > Valdosta State University > 229-333-5994 > dbri...@valdosta.edu > > ________________________________________ > From: Mike Palij <m...@nyu.edu> > Sent: Friday, February 27, 2015 9:13 AM > To: Teaching in the Psychological Sciences (TIPS) > Cc: Michael Palij > Subject: [tips] Is This Dress Red And Green? > > The internet was caught up in a frenzy yesterday -- > no, I'm not referring to the llama video -- but about > an optical illusion that people did not realize was an > optical illusion. Indeed, it was an amazing demonstration > of how unquestioning a person can be of their perception > of things in the environment as well as the degree of > overconfidence they have in their own judgments. > > To see where you fall, check out the dress at the > following link and then select one of the multiple choice > answers: > > http://swiked.tumblr.com/post/112158479910/trinititties-snacksandharts-swiked > > (a) The dress is red and green > (b) The dress is white and gold > (c) The dress is blue and black/brown > (d) What dress? > > Now, the explanations I've seen for this phenomenon > hasn't been completely satisfactory because they tend to > be vague and don't use the combined trichromaticity > theory-opponent process theory we all are familiar. For > one source of explanation, see the story on the Wired > website: > http://www.wired.com/2015/02/science-one-agrees-color-dress/ > and > > http://www.washingtonpost.com/news/morning-mix/wp/2015/02/27/the-inside-story-of-the-white-dress-blue-dress-drama-that-divided-a-nation/ > A less neuroscience-ish explanation is provided here: > > http://sploid.gizmodo.com/this-is-the-real-color-of-that-goddamn-white-and-gold-d-1688381523 > and > > http://sploid.gizmodo.com/this-is-the-real-color-of-that-goddamn-white-and-gold-d-1688381523 > > So, which of the multiple choice answers is correct? > Why, (d) of course. .;-) > > Now, where are those llama videos? > > -Mike Palij > New York University > m...@nyu.edu > > > > > --- > You are currently subscribed to tips as: dbri...@valdosta.edu. > To unsubscribe click here: > http://fsulist.frostburg.edu/u?id=13162.50de294b9d4987a3c89b4a5cc4bdea62&n=T&l=tips&o=42336 > or send a blank email to > leave-42336-13162.50de294b9d4987a3c89b4a5cc4bde...@fsulist.frostburg.edu > --- > You are currently subscribed to tips as: lcur...@knox.edu. > To unsubscribe click here: > http://fsulist.frostburg.edu/u?id=13346.fd4eeaf6abdc74d8c3a37fbfbb055cd9&n=T&l=tips&o=42337 > or send a blank email to > leave-42337-13346.fd4eeaf6abdc74d8c3a37fbfbb055...@fsulist.frostburg.edu > -- Leah Adams-Curtis Director of Assessment Knox College 2 East South Street Galesburg, IL 61401-4999 309-341-7260 --- You are currently subscribed to tips as: arch...@mail-archive.com. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13090.68da6e6e5325aa33287ff385b70df5d5&n=T&l=tips&o=42338 or send a blank email to leave-42338-13090.68da6e6e5325aa33287ff385b70df...@fsulist.frostburg.edu
