In summary, the major findings regarding line length, justification, and multi-column displays and online reading have been:From Is Multiple-Column Online Text Better? It Depends! by J. Ryan Baker, full article here: http://psychology.wichita.edu/surl/usabilitynews/72/columns.htm
- Longer line lengths generally facilitate faster reading speeds.
- Shorter line lengths result in increased comprehension.
- The optimal number of characters per line is between 45 and 65.
- Paging through online text generally results in better comprehension than scrolling.
- Reading speed is faster for both single and multiple columns, but preference is for multiple short columns.
- Left-justified text is read faster than full-justified text.
Apologies about the duplication to readers of my own blog, but I thought this worthy of posting here. Even an immersive VR simulation has been known to start with or include some text.