Our review also finds that both trust and faith are influenced by a range of other factors, such as conflict, inter-personal communication, power, perception of task complexity, perception of progress, and cultural integration. They also identify factors which can change the degree of trust and faith, such as the size and number of involved organisations (which affects perception of task complexity and thereby faith), geographical proximity (which changes frequency of interpersonal communication and thereby trust), and legal agreements (which can uphold aspects of the trust-to-risk relationship in contract and thereby increase trust).