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The aim of the paper is to review the global research on household saving behaviour, to review the scientific literature, and to consider the selection of the optimal research methodology for the thesis ‘Lithuanian Households’ Saving Behaviour for Retirement in an Ageing Society’. The paper reviews the main theoretical perspectives defining household behaviour and the methodological approaches of research conducted in the USA, Germany, Japan, the UK and Scandinavian countries. The traditional approach of economists to the human being in the economy is compared with the theoretical perspective of behavioural economists. The article presents recommendations for the methodology of research in Lithuania, by proposing to analyse the data from the Household Finance and Consumption Survey, and, based on the assumptions of behavioural economists, to provide recommendations to help people save more for retirement. [ABSTRACT FROM AUTHOR]