> Motion parallax has to do with the apparent size of an object. If you put a soda can in front of you and then move it closer, it will get bigger in your visual field. Your brain assumes that the can didn’t suddenly grow and concludes that it’s just got closer to you.
While parallax does play a part in perception of size and distance, we still perceive the size of objects without stereoscopy (that is, with one eye closed, or on a flat image). When shown an upclose photo of a can, people can figure out it didn't just grew because 1) we have previous knowledge of the shape and size of a can and 2) it's image gets distorted as it gets closer [1].
You can trick someone by making an object with an unfamiliar shape to look familiar when viewed with the right angle / FOV [2]. Similarly, making miniatures appear realistically-sized in photos involves careful FOV control to not trigger the signals in our perception [3].
This is a mechanism that, I think, would be interesting to study w.r.t. gender differences, more than rotating 3D objects.
While parallax does play a part in perception of size and distance, we still perceive the size of objects without stereoscopy (that is, with one eye closed, or on a flat image). When shown an upclose photo of a can, people can figure out it didn't just grew because 1) we have previous knowledge of the shape and size of a can and 2) it's image gets distorted as it gets closer [1].
You can trick someone by making an object with an unfamiliar shape to look familiar when viewed with the right angle / FOV [2]. Similarly, making miniatures appear realistically-sized in photos involves careful FOV control to not trigger the signals in our perception [3].
This is a mechanism that, I think, would be interesting to study w.r.t. gender differences, more than rotating 3D objects.
[1] http://en.wikipedia.org/wiki/Perspective_distortion_(photogr...
[2] http://en.wikipedia.org/wiki/Forced_perspective#Forced_persp...
[3] http://petapixel.com/2013/10/14/life-like-miniature-scenes-s...