Socioeconomic/family statusSocioeconomic/family status was measured by a single statement “How would you rate your family background”. Responseoptions were 1¼quite poor (within the lowest 25%), 2¼not welloff (within the 25–50% range), 3¼quite well off (within the50–75% range) and 4¼wealthy (within the top 25%). Studentswere subsequently divided into two groups: poorer (quite poorand not well off) and wealthier (quite well off and wealthy).