Article Title,Year,Volume,Issue,Page Range,Author Cooperative social coordination and aggression: II. Effects of sex and housing among three strains of intact laboratory rats differing in aggressiveness,1993,46,4,367-390,Schuster Absence of overshadowing and blocking between landmarks and the geometric cues provided by the shape of a test arena,2003,56,1,114-126,Hayward Contiguity and the outcome density bias in action-outcome contingency judgements,2005,58,2,177-192,Vallée-Tourangeau