Squat - favoring one side?

[Peter_k]

I think this may answer my original question as well.

My squat stance is a little bit narrower than this, but not much. I found that when I bring it in, it's easier to keep my knees out.

Just to be clear: does shoulder width mean the outside of shoulders are in line with the outside of the feet?

Also, from what I understand, the eccentric part of the movement is responsible for much of the soreness associated with squats. When you say push the knees out, does that mean mostly when going down, rather than up?

[Mark Rippetoe]

Shoulder width means the outside of the shoulders in line with the outside of the heels. And you push the knees out on the way down as well as on the way up if you're having problems with this.