On students, the most immediate effect of testing is anxiety. Most families have their characteristic exam-time symptoms. The household rhythms change. Girls' parents resign themselves to the overeating or under-nourishment, the sleepiness or insomnia, the amenorrhea, the fitful tears, the furious rejection of help. Boys' parents brace themselves for the lunatic sensitivity to noise, the ritually elaborate apparatus of study, the vocabulary of grunts and snarls, the midnight carbohydrates and the shuddering refusal of breakfast.