I am designing a survey using Latinobarometro questions, but I am not sure whether the alternatives "No Answer" and/or "Don't know' need to be included within the multiple choices for a given question. Any hint is welcome.
Although not familiar with the Latino barometro survey, when I am preparing any survey, sometimes is interesting to include the option “other:” with a space for an extra writen opinion. Most of the time, this extra opinion brings up interesting information.