There are two current types of SPI surveys/questionnaires. A third one, the longest, is not typically used anymore, but was integral in doing the research that was used in creating, testing, and refining, the main SPI tools. Regarding the two current surveys/questionnaires, we always suggest using one of the two with people you are trying to help grow spiritually. Our recommendation is that you use the one-page (two sided) 14-Question version.
The ease of use and ease of tabulation make this our go-to main option. Nevertheless, the second option (which has two pages stapled together) will give you some excellent additional information concerning your friends’, group members’, or congregations’ views of prayer and some aspects of spiritual warfare.