Just Noticeable Difference: Unit Of Measure

One of the many questions posed by those searching for answers on Just Noticeable Difference was if JND could be a suitable as a unit of measure. Analyzing data from two prior experiments, where participants were to discriminate different colors when shown different brightness intervals and applying it to sound also. Once all the data was analyzed, the researchers determined that JND could not be used as a unit of measure (Newman, 1933). Although JND could not be used as a unit of measurement, a debate of the luminosity perception, is the given thresholds of vision for perception and it actions (De Wit, 2012). Meaning that perception of vision is less than vision of action when responding to discrimination. An experiment was conducted to determine threshold between perception and action by accumulating visual threshold with two models, dual-task interference and a concurrent task. Both models demonstrated that no threshold interference exist between the dual-task, in other words, these visual thresholds could not be independent of each other. This implies that action task was more primed by vision perception.
Moreover, a different …show more content…
The idea behind their study came from the notion that when readers analyze the pages they are skimming through they don’t always get the most out of what their reading. They suggest that this could be in how the visual processing system is working; however, in some individuals, this system is slightly malfunctioned and typically causes the attention span in readers to decline significantly (Dain, Floyd, &Elliot, 2008). What they found in their study is after testing 35 participants with normal reading levels, and comparing them to 35 participants with a reading deficient, they report that the lower level readers could not pick up on blue wavelengths that well (Dain, Floyd, &Elliot,