The Font Feed comments on recent research by scientists at New York University who are proving that good typography matters. Neuro-scientists Denis G. Pelli & Katharine A. Tillman recently published a thesis in the Journal “Nature Neuroscience” advancing the theory that proper spacing is the defining factor in legibility.
I also dug up an example of previous research on the topic by these scientists. Interesting read if you like to throw a little neuroscience with into your daily design reading.