When I create a new file with 500px wide by 500px long it shows up on my screen as a rectangle. When I go to Image > Image Size it still shows the image as 500 x 500 yet it is clearly not a square. This also occurs if I try to create a circle, selecting the ellipse tool a checking the box for it to make a perfect circle it shows up as an oval.
I have Photoshop CS6 on a macbook.
Any help would be appreciated, I consider myself decently knowledgeable in Photoshop and I've looked through the settings, but I can't seem to figure out the issue, it's been happening for a while now, it's not a one-time fluke thing.