The Effect Of Icon's Familiarity And Change-type On Change Blindness

Icon refers to the meaningful graphic symbol which widely exists in our life.The icon has great advantage in conveying information,for example,we could get the meaning of the icon quickly.Sometimes,Icon will change when the significance they covey were different.However,people often ignore these changes,we called this phenomenon as change blindness.If the change blindness happened,we will misunderstand the information which the icon want convey.So,it is very important for us to study the factors which influence the phenomenon.In this research,we use one-shot paradigm to study if the two factors,the familiarity and change-type,has influence on the phenomenon of change blindness.The first experiment aims to study the familiarity and change-type if has influence in change blindness.There are 23 health college students,aged from 18 to28,who are all willing to participate in the 2(high familiarity,low familiarity)× 2(color change,form change)within-subject factors experiment.To avoid the subjects guessing the results,we show the subject two icon at once.And in the second experiment,the subjects have three choice which contain the left icon change,the right icon change and no icon change.There are 24 students participate in the 2(high familiarity,low familiarity)× 2(color change,form change)within-subject factors experiment.The result showed that:(1)The familiarity has great effect on change blindness.Compare with the low-familiar icon,subject get a higher score on the high-familiar icon.Otherwise,subjects' react time on high-familiar icon is shorter than the low-familiar icon.(2)The change-type has great effect on change blindness.Compare with the form-change,subjects get a higher score and spent shorter time on the color-change.(3)The familiarity influences the speed of found the different type of change.When show the familiar icon,subject could quickly found the change no matter which change-type happened.For the unfamiliar icon,subject found the color-changeicon's point more quicker than form-change icon.(4)Compare with high-familiar icon,the subjects' mean fixation duration is longer to unfamiliar icon.When they showed together,the subjects' fixation count and fixation time for unfamiliar icon is higher than familiar icon.The study draws the following conclusions:(1)Compare with the high-familiar icon,we are more likely get change blindness for unfamiliar icon.(2)Compare with the color-change,we are more likely get change blindness for form-change.(3)The familiarity influences subjects found the different type of change.For the familiar icon,the speed that subjects found the different change hasn't difference.For the unfamiliar icon,subject found the color-change icon's point more quicker than form-change icon.(4)We should pay more attention on unfamiliar icon than familiar icon.And we cognize the high-familiar icon more easier.