Complex sentence: In addition, the need to select the appropriate language system makes ordinary linguistic processing more effortful; the simple act of retrieving a common word is more effortful for bilinguals than monolinguals due to the competition of the two languages.
Split into simpler sentences: In addition, the need to select the appropriate language system makes ordinary linguistic processing more effortful. The simple act of retrieving a common word is more effortful for bilinguals than monolinguals due to the competition of the two languages.