Experimental Design Details
Though CEs are usually used to elicit preferences for products or product attributes (De-Magistris et al., 2013), they suffer from major pitfalls namely hypothetical bias (Johnston et al., 2017), and lack of incentive compatibility (Lusk & Schroeder, 2004). Hypothetical bias is not a challenge in our study because the products are well known to the study participants. In addition, our experiment is incentive compatible because choices in the experiment will have real life consequences. The experiment will target 260 pastoral groups (130 men groups, and 130 women groups), each with approximately 8 members. We will have three levels of exogeneous variation in the experiment. The first level will entail randomly assigning pastoralists to either the information intervention group (n = 130) or the no information intervention group (n = 130). The second level will entail randomly assigning pastoralists in each of the two groups to a coupon amount of either Ksh. 1000 (n = 65) or Ksh. 2000 (n = 65) . This will be done at the field to enhance transparency—the pastoralists will select a piece of paper from a bag to determine whether they receive the Ksh. 1000 coupon or the Ksh. 2000. Lastly pastoralists in each of the 4 groups will be assigned randomly to one of the 4 products, namely IBLI+animal health, IBLI+animal nutrition, IBLI+breeding, and IBLI+a flexible package.
Description of the bundles
1) IBLI + Health related products (B1)
This bundle will include IBLI and health related products namely veterinary medicines (for example antibiotics), vaccines, and clinical services. The pastoralist will have the liberty to use the coupon on any of the three health related items, the only condition being that any expenditure above the amount of the coupon will be incurred by the pastoralist. The products purchased can be used on livestock other than cattle.
2) IBLI + Nutrition related products (B2)
The bundle will include IBLI and products relating to the nutrition of livestock, for example feeds and fodder. Pastoralists will have the liberty of using the coupon on any nutrition related products (for example fodder, pellets, or other commercial feeds), the only caveat being that the expenditure should not exceed the amount of the coupon. The pastoralist will incur any extra cost above the amount of the coupon. The products purchased can be used on livestock other than cattle.
3) IBLI + Breeding related products (B3)
This bundle will consist of IBLI and products relating to livestock breeding such as artificial insemination (AI). The coupon can be used on breeding material for other livestock in addition to cattle. Any expenditures above the amount of the coupon will be incurred by the pastoralist.
4) IBLI + health or nutrition or breeding related products (B4)
Bundle 4 will be a flexible bundle, where pastoralists can use the coupon on a product of their choice, either health, nutrition, or breeding related. Like all the other products, any extra expenditure above the amount of the coupon will be incurred by the pastoralist.