Onderzoeksnotitie: Het meten van beroepen in web-surveys: een zoekboom

This article addresses the design of a search tree for occupations in web surveys. For the continuous WageIndicator web survey in the Netherlands, a search tree with a choice set of 2.187 occupations has been developed. These occupations are related to the Netherlands Classification of Occupations SBC with 1.211 occupational titles. A search tree must find an optimal solution between a short reading time and a long list of occupations. This list has to be extensive, because for valid self-identification the occupational titles must come close to the respondent's job titles. For this purpose, the three tier search tree has been developed. This article details the principles that have been used in designing the search structure and the choice-set.