Demographers and geographers attribute the slowing largely to the recession, which has hit California particularly hard, leaving its once-robust economy to bring up the rear of the national recovery. 人口學家和地理學家把緩慢的情形都歸咎於不景氣,加州情形尤為嚴重,以致加州一度蓬勃的經濟竟然在全國復甦中落在各州之後。