Professor gonzalez studied the relationship between breast milk versus formula feeding during infancy to children’s iq at age seven using a population of 100 children. professor gonzalez found that children who had been breastfed during infancy had significantly higher iq scores compared to those who had been formula fed. professor patel repeated gonzalez’s research using 200 children in his study and found no significant differences in iq score in terms of whether the child had had breast milk or formula during infancy. what concept could explain the marked differences in results of the two researchers? '