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Figure 7 : Users preferences for each trustee attribute (most trusted).
5- Discussion
The results of Study 1 reveal that non-experts trust paper maps more than
online maps, which shows the need to research trust and improve the
trustworthiness of online maps, because of their increased popularity and
use. More evidence that trust should be further investigated is provided by
Study 2, since the strongest emotional response of participants was related
to trust.
It was already explained that the trust-related elements under investigation
described in Table 1 , were found to be important in our previous inductive
research approach and after the investigation of two Web GIS applications
(WIYBY and nuclear SDSS). From Study 1 it can be concluded that the
majority of respondents thought that all these trustee attributes are impor-
tant in the formation of trust perceptions, however when the respondents'
were asked to describe the elements they consider before trusting an online
map, they failed to recognise all of them. Based on the responses, the most
important Web GIS trustee attribute is the existence of logos, followed by
legend, map tutorials, different scales, big map size and colours. Colour
was considered as the least important, although it was revealed by Study 2
that the strongest emotion triggered by colour was trust.
Similarly in the CE the majority of participants agreed that all trustee
attributes are important for the formation of their trust perceptions, in the
 
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