Melhuish, Edward;  Quinn, Louise;  Sammons, Pam;  Siraj-Blatchford, Iram;  Sylva, Kathy;  Taggart, Brenda;  Shields, Christopher;         (2002)    EPPNI Technical Paper 5 - Pre-school experience and cognitive development at the start of primary school.                    Stranmillis University College Belfast: Belfast.