When Ken and Cynthia were told that they were going to have twins, they were more surprised than you can imagine. It meant buying more clothes, and two of everything else. But, this was their best news ever. Finally, the big day arrived. Jon was born first, and later came Judy. For Ken and Cynthia, this was the most wonderful day of their lives. However, the most unusual thing about the twins, Jon and Judy, was that from the very first day, instead of being exactly the same or even similar, they were very different. Jon was heavier and more active. As an infant, Judy was much smaller, more gentle and definitely quieter. Getting older made their differences stronger. In New York, Judy was always friendly with new people. Jon treated other children more suspiciously, and he often quarrelled with children on the block.