Identifying Consumer-Welfare Changes when Online Search Platforms Change Their List of Search Results Staff Working Paper 2020-5 Ryan Martin Online shopping is often guided by search platforms. Consumers type keywords into query boxes, and search platforms deliver a list of products. Consumers' attention is limited, and exhaustive searches are often impractical. Content Type(s): Staff research, Staff working papers Topic(s): Econometric and statistical methods, Market structure and pricing JEL Code(s): C, C1, C14, D, D1, D11, D12, D6, D8, D83, L, L4, L40