While many mothers-to-be are advised about the benefits,configurations,flaws,patternsof breastfeeding, what they may not be told is that the effects go well beyond physical health. A new study finds babies breastfed for long periods have better performance on intelligence tests, greater school achievement, and higher monthly incomes as 30-year-olds. While past research has found higher intelligence scores,expectations,additions,scalesamong breastfed babies, what is so significant about this study is that the researchers were able to collect more complete information on breastfeeding duration and also followed for a longer period. And, by using a population-based birth fellow,sibling,companion,cohort, the breast feeding practices had no association with,on,at,withinincome level. Most of the evidence of higher intelligence test scores among breastfed babies comes from high-income countries, where middle-class and higher-class mothers are more likely to breastfeed their babies than lower income mothers- certainly in the United States, breastfeeding rates multiply,channel,reflect,deceivethis trend. With evidence coming from first-world countries 'Where breastfeeding is positively associated with higher socioeconomic status'. Horta explained, 'There is always a question of whether the effect that has been observed in other studies is a consequence of breastfeeding by itself or has the result been transformed,confounded,revealed,conformedby socioeconomic status.' Specifically, higher income babies are most likely eating better quality food and this could be impacting IQ test scores.