Furthermore, the relationship between white matter development and grey matter development is not especially strong (see Tamnes et al, Cerebral Cortex 20:534), so one might be quite immature on one metric but mature on another. ..... I was going round and round the hotel garage. Must have been touching close to 94. Oh, but I'm always crashing in the same car. Elise says: 20 February 2010 at 3:20 pm. David @43, most people in Norway are very, very wary about drink-driving. ...