Logan conducted a similar study in 2000, and his most recent research was a continuation of that to see if the differences he spotted 13 years ago remained. The patterns and trends have become even clearer in the past decade, he said.
The report also took a look at certain social and economic characteristics of the different groups that showed various degrees of economic success. One measure examined were the median wages of each group.
While the median annual wage for Mexicans in the United States was $20,200, wages were much higher for Argentines and Venezuelans, both with median wages of $30,300.
This finding wasn't surprising, as social scientists have long noted that those with roots in Cuba and South America tend to have different economic backgrounds.
But one group that is sometimes assumed to be insular and employed in lower wage jobs -- Puerto Ricans -- are actually doing quite well, the study found. Puerto Ricans have increasingly integrated with the rest of the population and have a median wage of nearly $30,000.