Size matters. In crowded stores people spend less time shopping, do less impulse shopping, purchase fewer items, are less social and more nervous
. Notably Asians are more tolerant of crowding, while the British are the least tolerant.
Read more: http://www.businessinsider.com/supermarkets-make-you-spend-money-2011-7?op=1#ixzz3aJYxL7Sk