We introduce two institutions that provide multiple public good units, assuming that a market-maker has the ability to establish groups of contributors. We set up a public good experiment where either all N individuals form one group to provide two units, or divide the N participants into two...

Attenuation of the exposure-response relationship due to exposure measurement error is often encountered in epidemiology. Given that error cannot be totally eliminated, bias correction methods of analysis are needed. Many methods require more than one exposure measurement per person to be made,...