Abstract: A method of facilitating communication events, each between a group of users comprising a first user and other users, the method comprising: from each of a plurality of sampled communication events, determining a category of each of the other users in the respective group and determining one or more actions performed by the first user potentially indicative of bias; analysing the actions of the first user in relation to the categories of each of the other users in each respective group over the sampled communication events, in order to detect a bias of the first user that has a potential effect of impeding involvement of an identified category of user in at least part of a current or future communication event; and based on the detected bias, generating an actionable output via a user interface in order to mitigate the effect of the bias.