arrested development...

http://www.the-spearhead.com/2010/04/19/
defeated-as-men/japanese-boys-don-skirts/

arrested development - an abnormal state in which development has stopped; infantile fixation; regression.

Further research is needed to investigate other underlying causes for the phenomenon besides smothering, domineering mums, but I have thought it over long enough and observed enough, way enough, to put forward the hypothesis that most Japanese males constitute a serious case study of arrested development - that is, their emotional growth seems to have stopped at some point when they were twelve.

There is indeed no other plausible explanation for such widespread insecurity and lack of assertiveness, for such self-absorption and mistrust of others outside one's inner group, for such fear of intimacy and aversion to risk, for such obsession with outfits and hairdos, for such lack of curiosity about and concern with the outside world.

As the probability that one is dealing - will ever deal - with fully fledged adults is very low indeed, the advice is thus to handle delicately and take with more than a pinch of salt.

These chaps live in an eternal Galapagos of the mind, and, in view of this, it does seem reasonable to regard the country's future with grim foreboding, as a columnist has recently put it.