Geoscience Reference
In-Depth Information
provided. For example, the ENM provides environmental information
about noise pollution in London so a potential user can decide where to
buy a house based on the data. Similarly LAQN provides information
about air quality in London and LP provides information such as crime and
health data for the wider London area.
In the first stage a questionnaire was completed by each participant to
gather demographic data (e.g. user's background, prior experience in Web
GIS, gender). Also participants were provided with the same Likert-type
items (Table 1) used in the online survey to understand what they believe
about each trust component. In the second stage participants were given
three simple tasks, one for each Web GIS application (in different order),
and they were asked to verbally express their trust perceptions.
Finally, participants were asked which interface they trust the most and
why and also their perceptions about the trustee attributes. For example,
for the legend item (and for all other elements) the following questions
were asked (Table 2). With the guidance of the observer they were then
asked to assess each trust component on each application separately.
Table 2
: Post Questionnaire - Legend Example
