However, these surface differences may reflect differences in ethnicity or in the number of languages spoken by their two groups.
They differed in the number of languages spoken (to cover the number of languages spoken by the participants with aphasia) but for simplicity's sake we refer to them as bilingual controls rather than bi-/multilingual controls.
For example, as I mentioned in Found in Translation, the number of languages offered by Facebook represents 90% of the world's population and 95 perent of people with access to the internet.
These divisions differ in both the number of languages and the degree of genetic relationship as measured in terms of common inherited vocabulary and shared grammatical features, issues considered at further length below (see also comparative linguistics; historical linguistics).
Niger-Congo languages, a family of languages of Africa, which in terms of the number of languages spoken, their geographic extent, and the number of speakers is by far the largest language family in Africa.
The chart below measures language diversity in two very different ways: the number of languages spoken in the country and Greenberg's diversity index, which scores countries on the probability that two citizens will share a mother tongue.
A common feature of workplaces in the municipalities was the number of languages spoken by healthcare staff.
The number of languages in use in industry thus seems to be higher.
What's not in question, however, is that the number of languages is decreasing rapidly.
