We measure respondent satisfaction in at least three different ways:
The quality of the data collected from any of the surveys that we host is our responsibility. The main points of quality that we observe are:
Speeding is checked in post-processing, whereby we look at the middle 8 deciles (middle 80% of the sample) of the completed surveys, from which we calculate a mean (this is to leave out outliers at the extremes, just in the mean calculation). If a survey is completed in less than a certain fraction of this average, then we'll remove the response from the data.
A number of factors may come into play:
The panel membership registration process is only completed following: