[UPDATE: Huh. I thought that I had put this up this morning.]
The researchers then clamped each student’s head into place, and used an Eyelink 1000 to record where they looked as they silently read 20 paragraphs. The paragraphs were written in various styles: one-spaced, two-spaced, and strange combinations like two spaces after commas, but only one after periods. And vice versa, too.
And the verdict was: two spaces after the period is better. It makes reading slightly easier.
Not that it matters: book and story format submissions use fonts that reward two-space use. So there was nothing stopping me from changing my style, anyway. Still: VINDICATION.