I always assumed that The Little Madam's bum-shuffling was just an alternative to crawling and nothing more. So it annoyed me when I kept coming across advice from SPARC (a government organisation hell-bent on making us Kiwis do more exercise), about the importance of crawling to neurological development in babies, toddlers and young children. It seemed to me that they were ignoring bum-shufflers, because surely bum-crawlers don't end up all retarded do they?
But the Plunket nurse, at TLM's 15-month weigh-in, seemed terribly keen that I encourage her to get crawling. And she crushed my already diminishing peace of mind by referring to some research linking bum-shuffling with learning difficulties.
So I Googled it, as you do. And there are numerous mentions of bum-shuffling being linked to learning difficulties, especially dyslexia.
So for the rest of the evening I'll be searching the discussion boards for anecdotes about bum-shufflers who grew up to be Nobel Prize-winning scientists, Mensa members and polymaths.