The existence of home advantage in football is a well known and well documented fact. However the precise
causes and the way in which they affect performance are still not clear. A comprehensive review is made of published research
under the main hypothesized explanations for home advantage in football which are: crowd effects, travel effects,
familiarity, referee bias, territoriality, specific tactics, rule factors and psychological factors. Their interactions, and other
factors that need to be taken into account when investigating home advantage, are considered.