¡Descarga The Viral Dress Image: A Case Study in Color Perception y más Apuntes en PDF de Psicología solo en Docsity! “The Dress” Extract from Wikipedia text: "The dress" is a photo that became a viral Internet picture on 26 February 2015, when viewers disagreed over whether the item of clothing depicted was black and blue or white and gold. The phenomenon revealed differences in human colour perception which have been the subject of ongoing scientific investigation in neuroscience and vision science, with a number of papers published in peer-reviewed science journals. The photo originated from a washed-out colour photograph of a dress posted on the social networking service Tumblr, and a dispute over whether the dress pictured was blue and black, or white and gold. In the first week after the surfacing of the image alone, more than 10 million tweets mentioned the dress, using hashtags such as #thedress, #whiteandgold and #blackandblue. Although the actual colour of the dress was confirmed to be blue and black, the image prompted discussions surrounding the matter across various platforms, with users discussing their opinions on the colour and why they perceived the dress as being a certain colour. At the same time, members of the scientific community began to investigate the photo for fresh insights into human colour vision. A scientific analysis of “The Dress” Since the picture went viral, several studies have been conducted to try to elucidate the visual processes that are involved in the perception of the colors of the dress, and understand which individual differences might give rise to the opposing color percepts that different people experience. In this exercise, we will analyze the study by Rabin et al. (2016) which analyzes possible inter-individual differences in early stage optical, retinal and neural mechanisms that may impact the perception of the dress. However, before we analyze this paper in detail: • How many studies are you able to find in Medline, which have also studied the visual perception of the dress? • Has any revision of all these studies been published so far? • From a glance over the article titles and journals, can you identify which are main variables that have been investigated in relation to the perception of the dress? • Do you think that there is consensus in the scientific community on the issue? Journal Club: Rabin, J., Houser, B., Talbert, C., & Patel, R. (2016). Blue-Black or White- Gold? Early Stage Processing and the Color of “The Dress.” PLOS ONE, 11(8), e0161090. http://doi.org/10.1371/journal.pone.0161090 Read the paper carefully, and analyze the following points: 1. Background of the study PsychophysiologyJournal ClubCourse 2016/17 1 1.a.Make a bullet-point list of the main concepts and/or ideas introduced in the introduction 1.b.Can you identify papers in the reference list that might be useful to understand the most important concepts? 1.c.Does the introduction present other studies that have dealt with the same problem that is addressed in this study? List the references. 1.d.Did previous studies investigate other factors that might be related to the current study? List which factors did they investigate, and what the main findings are, together with the references. 2. Aims 1.e.List which open question(s) in the field are identified in the paper 1.f. Write in one sentence what was the main aim of the study 1.g.Which specific aspects does the study want to investigate? 3. Methods 1.h.What kind of study is this: experimental, observational..? 1.i. What is the target population: animals, patients, healthy humans…?; What was the sample size and characteristics of the sample? 1.j. Describe the procedure that was followed to obtain the data. What is the design of the study? Was there a particular task? What are the different conditions? 1.k.Identify which methods were used to obtain the data (fMRI, EEG, MEG, performance measures, EMG, …) 1.l. Identify which variables were analyzed and which statistical contrasts were made. What is dependent variable? What is the independent variable? What was compared to what? 4. Results 1.m. Analyze the figures. How has the data been summarized? What is presented in each plot? PsychophysiologyJournal ClubCourse 2016/17 2
