Dynamics of Trust - Trust Theory: A Socio-Cognitive and Computational Model - page 166

Table 6.5 Pseudo-Transitivity: Combining the Degrees of Trust

DoT ZYτ > σ 2

DoT Z Yτ σ 2

DoT X Z (ev)τ > σ 1 X trusts Y as for τ X does not trust

Y as for τ

X trusts Y OR
X does not trust
Y as for τ

DoT X Z (ev)τ σ 1 X trusts Y OR

X does not trust
Y as for τ

mainly due both to the utility and diffusion of the practice itself: it can be a simple conformity
feeling and imitation; or it can be an explicit cognitive evaluation such as: 'since everybody
does it, it should be quite safe (apparently they do not incur systematic damages)'. If everybody
violates traffic rules, I feel encouraged to violate them too.
More formally, we have:

given S we are considering the set of agents belonging to the commu-

nity as reference for trust diffusion.

= { s 1 ,. ., s n }

( DoT Z n Y τ >σ n )) then

if Bel ( X ( DoT ZY τ >σ 2 ) ∩ ( DoT Z'Y τ >σ 3 ) ∩ ... . ∩

DoT XY τ >σ 1 .

Z

Z

τ

τ

Trust on

Trust on

τ τ

Trust on Trust on

X

X Y Y

τ τ

Trust on Trust on

τ

Trust on

W

W

J J

t 1 t 2

t

Figure 6.12 Trust Conformism