Before the 1960s, bilingualism was considered a handicap that slowed a child's development by forcing them to spend too much energy distinguishing between languages, a view based largely on flawed studies.
Før 1960-tallet var tospråklighet ansett som et handikapp, som sakket barnets utvikling fordi de brukte for mye energi på å skille mellom språkene, et syn som kom fram i mangelfulle studier.