[FireSquid2006]

Copied from the study

"To determine whether the measured effects were actually due to receiving the basic income and not, for example, to broader societal developments, the Basic Income Pilot Project was designed as a randomised controlled trial. This ensured that the participants in the control group were so-called 'statistical twins' of the basic income group. This meant that they were very similar in their sociodemographic characteristics and differed mainly in whether or not they had received a basic income.

Both groups were essential to the success of the study. Only by comparing their experiences could scientific conclusions be drawn.

To prevent bias, care was also taken to ensure that both groups included equal numbers of ideological supporters and opponents of basic income.

The study focused on people between the ages of 21 and 40 living alone in a household with a net income of between €1,100 and €2,600 per month. We explain why these characteristics were chosen in our journal."