The neutral middle option in questionnaires generates different responses in research. Some consider it easier for respondents to avoid an answer, while others consider it necessary for respondents not to be forced into a response option that they can not stand for.
In some surveys, such as attitude measurements, it may be effective to omit neutral response options to create as clear a result as possible. In these cases, however, it is extra important to ensure that the issue is not leading.
Furthermore, many argue that neutrality is also an opinion. In general, however, it is advantageous to use a neutral answer option because the survey thus allows the participants to answer honestly, if neither one or the other extreme complies with their own perception. Whatever attitude, in this case, it is important never to equate a “do not know” option with a middle alternative, as these two are not equivalent in their character.
This is also one of the reasons that we at Enkätfabrikken are advocates of tailor-made investigations, where neutral response options are included or excluded in a conscious way to match the purpose of each survey.