|Number of ROSCAS|7|7|
|---|---|---|
|Number of participants|200|203|
|_Percentage female (in %)_|_100_|_100_|
|Number of farmers' groups|9|8|
|Number of participants|203|200|
|_Percentage female (in %)_|_4.4_|_47.5_|
|Panel B: Endline|||
|Number of individuals in initial sample not found at endline|1|1|
|_Percentage of baseline sample (in %)_|_0.25_|_0.25_|
|Total number of individuals surveyed at endline|502|496|
|_Percentage female(in %)_|_50.60_|_71.98_|

Selected individuals were visited a few days prior to the first experimental session. The basic objective of the study was explained to the individual and he/she was told that participation would entail participating in a survey, attending a group meeting in which they would be given money and have the opportunity to choose how to use it, and participating in a survey after the end of harvest. They then indicated whether they wanted to participate in the study or not and if so the consent form was signed and the survey proceeded.

During the baseline survey questions on demographics, assets, expenditure on key categories of goods, agricultural production practices, sources of income, health status, recent shocks were asked, and baseline savings, loans and remittances data was collected. Surveys were conducted using PDAs in Senegal and using laptops in Burkina Faso. In addition each participant was asked whether he/she would like to receive a gift of 500 CFA at the meeting to which they had been invited on the following day or a gift of 550 CFA at another similar event to be held in one month. The participant was also asked whether he/she would like to receive a gift of 500 CFA at the meeting to be held in one month or a gift of 600 CFA to be held in three months at the end of the agricultural season. Their time preferences were recorded and the respondent was given an information voucher reminding them of the details of the experimental session to be held and what their choices in the time preference questions had been.

At the end of the experimental session the following day the participant received any gift he/she had elected to receive that day through the time preference questions. In addition, at the experiment the following day, each participant was also asked to participate in a standard Binswanger style lottery (Binswanger 1980) in order to measure risk attitudes before the main experiment as described in Section 2. Although individuals made choices in this risk lottery prior to participating in the rest of the experiment, the results of the risk game were not determined (i.e. the coin was not flipped) until the end of the experimental session after individuals had recorded their main experimental decision of how much to save or spend on insurance.

One month after the experimental sessions, all participants were revisited. As described in section 2 an input fair was held during which time respondents with savings with the group treasurer could withdraw the funds, and inputs were offered for sale. For all those that attended the input fair, we recorded the amount left in the savings product and the amount of agricultural inputs purchased during the fair. A short survey was conducted with all those that attended the fair after they had made their purchases and with 10