blogTitle.png
p < .05 公式ブログ
Do the eyes have it?
Do the eyes have it? | comments(0)
roundCornerIcon.png 

Mobile Psych Lab • Room 02

Suppose you notice that someone is looking toward a direction. 
Are you a type of person who can’t help looking at the same direction as that person is looking, or who never care about what others are looking at? 

'Do the eyes have it?' is an iPhone App which allows you to conduct psychological experiments to measure your susceptibility to others’ gaze direction. 

The measurement procedure is simple. 
[1] At the center of the screen, one of the characters of my previous App ‘Gaze Game’ is displayed. The measurement starts when you tap the face. 


[2] An apple appears to the left or right of the face. Tap the apple as quickly as possible. Your reaction time is measured. 

[3] This procedure is repeated a number of times. 

Just before the apple comes in, the face at the center of the screen looks to the left or right. However, you should NOT trust the face’s eyes, because their direction is absolutely irrelevant to the apple’s position. 


Suppose you are susceptible to others’ gaze direction. 
When the face directly looks at the apple, you may tap the apple quickly. However, when the face looks opposite to the apple, your reaction to the apple may be delayed a bit. 

If you are not susceptible to others’ gaze direction, your reaction time to the apple should not be influenced by the directions the face is looking. 

This App calculates your gaze susceptibility score, which is simply obtained by subtracting your reaction time when the face looked at the apple from the reaction time when the face looked opposite to the apple. 
The higher the score is, the more likely you are susceptible to others’ gaze direction. 


Gaze susceptibility score' defined in this App is not a psychological term. However, the experimental procedures employed here are based on actual psychological studies, in which a phenomenon called ‘gaze orienting’ or ‘gaze following’ has been investigated.

This App involves five experiments. 
1) Experiment 1, in which you can measure the most basic and important score, is FREE. 
In 50% of trials, the position of the apple and the gaze direction are congruent, but in 50% of trials, they are incongruent. So, the gaze direction cannot serve as a clue to predict the position of the apple.

2) In Experiment 2, apple appears more often (75%) to the direction opposite to the gaze. Can you utilize this preliminary information to predict the apple's position?


3) In Experiment 3, seven faces are displayed on the screen. Do many faces induce gaze orienting more significantly than a single face?

4) In Experiment 4, the face also looks to the 'left' or 'right'. However, it is rotated by 90 degrees. So, its gaze direction is actually 'upward' or 'downward' as viewed from you. Can gaze orienting occur under this condition?


5) In Experiment 5, the face at the center of the screen displays a fearful expression. One study reported that faces with fearful expression induced gaze orienting more significantly than faces with neutral expression. However, this effect was evident only for highly anxious individuals.



Note: SOA is an abbreviation of 'Stimulus Onset Asynchrony'. In this App, SOA implies the time period between when the face looks to the left or right and when the apple appears on the screen. Past psychological studies have shown that gaze orienting is influenced by the amount of SOA. This App adaptively adjust SOA so that your gaze susceptibility score is maximized. However, this adaptive adjustment for each experiment is effective only after you have repeated an experiment more than six times.



Acknowledgments
This App utilizes appirater by arashpayan, and sound effect files provided by ユウラボ8bitサウンド工房.
I here express my appreciation.

  Pupil Life Manager - p < .05