I assume that in the Anglo-Saxon world people look into each other's eyes (or believe they do), whereas here, in Spain, we tend to shift our gaze more, from the listener's face to the surroundings, etc. I don't know; it's possible. I find it difficult to find good references online. Most of the ones I come across compare East Asia with the Anglo-Saxon world.
continued:I suspectโand this is the interesting partโthat there are significant cultural differences in this regard. In fact, the reputable Spanish books on autism that I have read don't address this topic (if I remember correctly).