The teacher's prognosis seemed decisive. "His IQ," she declared "is very low." Yet I still harboured doubts. Rather than make an appointment with the educational psychologist nominated by the school, I consulted personal friends who are shrinks. On their recommendation, I took my son to his first educational psychologist in Finchley. I returned, as ordered, 90 minutes later. She appeared flustered. "I need another 40 minutes," she said. Then she explained her confusion. "Orally, his IQ is very high, but his written IQ is low." She could not explain the discrepancy.