By Dr. Michele Borba The study came from Norway lead by a psychologist, Petter Kristensen. Over the past decade Kristensen and a group of researchers meticulously analyzed IQ scores of 250,000 men. All the men took the IQ test when they were 18 or 19 years old and were required to do as draftees entering the Norwegian army. When the results found that the oldest child is smarter than next oldest sibling by an average of 2.3 points, who is turn beat the third-born brother by 1