The idea that abnormality can be judged in terms of notbeingable to cope with the ordinary demand of everydayliving
People are judges on their ability to perform their everyday life. If they cant do this and are experiencing distress or others distressed by their behaviours this is considered a sign of abnormality
“function” = eating working washing communication etc
Not functioning adequately causes distress for the individual and/or may cause distress for others. With some mental health disorders the individual may not be distressed but others are
There may be situations where a person is not coping is their normal way of living. If it is not causing distress to them or to others then it is not deemed abnormal