Community psychologists such as McMillan and Chavis (1986) state that four key factors defined a sense of community: "(1) "membership", (2) "influence", (3) "fulfilment of individuals needs" and (4) "shared events and emotional connections". So, the participants of learning community must feel some sense of loyalty and belonging to the group ("membership") that drive their desire to keep working and helping others, also the things that the participants do must affect what happens in the community; that means, an active and not just a reactive performance ("influence"). Besides, a learning community must give a chance to the participants to meet particular needs ("fulfilment") by expressing personal opinions, asking for help or specific information, and share stories of events with particular issue included ("emotional connections") emotional experiences".