Are There "Nonattitudes" Reflected in Embryonic Stem Cell Research?

Yesterday my public opinions class discussed "nonattitudes" in public opinion polls. This concept means that people may not have an opinion about an issue for various reasons but respond in polls as if they do. While designing my poll, I need to consider whether I believe "nonattitudes" may be a problem and if so, what to do about it. It doesn't seem like "nonattitudes" would be an issue in polls regarding embryonic stem cell research mainly since opinions have been stable throughout the years and although this issue isn't really debated in the news at the moment, it is still a popular controversy. One issue I think may be a problem is that some people don't really understand what exactly stem cell research is and why there is such a debate. I have spoken to a few people on the issue and some admitted that they really don't know what the research entails yet they would still give an opinion if asked whether or not they support it. This seems to be the only problem I may have to think about regarding "nonattitudes" as I design my poll. A screening question I can use would be whether or not you have an opinion about the topic and maybe ask why they are in favor or in opposition and then continue with the survey if they have an opinion. I haven't really come across a poll on this issue that seems to reflect "nonattitudes." If I decide I need to ask this question to weed out those who don't really have an opinion it is something that will definitely be worth while. I will also add the option of "don't know" or "no opinion" in the questions that need that as an option because I wouldn't want anyone to feel forced to make a decision regarding a question they really don't have an opinion on which would result in results that are not accurate. As I continue to brainstorm and write out my poll design I will post more information regarding the project.