One column logistration form OR two columns?

Question

Don't look at me like that, I actually like the way to call both login and registration forms together a logistration form, well it's convenient.
I've designed a logistration form, but the problem is that I want to know which approach do you think you're more comfortable with, a single column or two column approach?
By the way I've read this article about Two column vs Single column
I'd actually like to know your own opinion, which one is better?

Two column approach?

And one column approach:

Answer 1

When you have a single form, it's best to use a single column, because the path to completion is less confusing. However, here you have two forms on the same screen, and the user will never switch between the two - either he fills out one, or the other. So that's a very different scenario.

In this case the one column approach is problematic because the bottom form is hidden from view. For instance, if you put the log in at the top, then users might not discover the registration hidden below the fold. They will see the page as a log in form and will try to find the registration page elsewhere. If you do this in two columns, you prevent that problem and you should only make sure you have a clear visual separation between the two forms.

Answer 2

I would suggest you to have a single column for this type of approach. It makes validation entry easy and without any complexity. On the other hand multicolumn could be cumbersome and complex in terms of showing any validation stuff etc.

meanwhile , make sure your UI doesnt look monotonous in single coulmn , keep some difference in design b/w login and registration contents so that user finds it attractive.

avoid multi column article