Random thought for the day…
Body specificity means you favor the direction of your dominant hand (i.e. if you are choosing between two wines, seemingly equal in value and flavor, you’re more likely to choose the one on the side of your dominant hand). Say that 70-95% of the population is right handed*… I wonder if that’s the reason text and messenger is set up the way it is: the left side is the person with whom you are speaking, and the right side is identified as yourself.
There is some intense psychology in interface design, I could analyze it forever.**
*Side note: I have found, in relatively busy parking lots, that if you turn to the left from the entrance, you will find more open spots, than if you turn to the right or go straight. Most people tend to avoid going left.
** I suppose it’s all just speculation. Correlation ≠Causation
(Source: scientificamerican.com)