the.com/consumer psychology
the science of why your cart has things in it you can't explain to your spouse.
means the study of how people actually decide to buy things, which is rarely the logical process they think it is.
from emerged in the early 1900s as advertisers realized economics alone couldn't explain purchases, then exploded when behavioral economics proved humans are gloriously irrational shoppers, not the rational calculators textbooks assumed.
anchoring effectfirst price you see rigs every price after
decoy pricinga bad option exists just to sell you the good one
9 endingsprices ending in 9 outsell rounder, cheaper prices
scarcity cueonly 3 left triggers buying even without wanting it
for instance
williams sonoma bread maker — adding a pricier model doubled sales of the cheaper one
costco samples — free tastes reliably lift sales of the sampled item
amazon one-click — removed friction so completely it got patented in 1999
de beers diamonds — invented a two months salary rule in 1938 ad copy