Your digit span is a little-known aspect of memory, but train it and not only will your memory improve, but you’ll increase your IQ too!
Seven bits of information seems to be the natural limit of our mental ‘desktop’ on which we do our thinking. Increase this memory space and reap the benefits.
Humans seem to have a predilection for the number seven; it crops up again and again through history. We talk of seven deadly sins, seas, days of the week, wonders of the world, ages of man and so on. It seems humanity never met a number seven it didn’t like. Could this be related to some in-built feature of the way we think? In 1956, the psychologist George Miller published what became one of the most famous psychology papers ...