Complex sentence: First, they examined the differences between Menominee Native American children and European American children and found that Menominee children were more likely to mention ecological connections and closeness to nature, and were more likely to mimic animals.
Split into simpler sentences: First, they examined the differences between Menominee Native American children and European American children. They found that Menominee children were more likely to mention ecological connections and closeness to nature, and were more likely to mimic animals.