innovation indicators for the retailing industry a meso perspective siid project phase 2 pim den hertog erik brouwer december 2000 dialogic centre science & policy utrecht university inputs as provided by our interviewpartners are gratefully acknowledged further we benefitted from comments made bart van ark and lourens broersma state groningen faculty of economics empirical statistical work was carried out at research economic microdata cerem statistics netherlands views expressed in this paper those authors do not necessarily reflect policies content 1 introduction 3 key characteristics 4 basic dutch changes consumer behaviour new 5 drivers 8 using 4d model 11 patterns 14 measuring 16 data availability generic 17 specific 25 summary conclusions 29 annex 33 checklist mei 34 36