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.
Berî 1960'î dihat gotin duzimanî peşkeftina zarokan hedika dike û nebaş e. Çunkî zarok dijwarî dikişînin di navbera du zimanan de. ew fikir jî texmîn bû.