Laws to regulate immigration,such as the Immigration Law of 1924,were often based upon:
A) culture-free intelligence tests
B) Yerkes' intelligence ranking of European races
C) the finding that immigrants from northern Europe had the lowest IQ's
D) the superior IQ of racial groups from eastern Europe

Question

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The Immigration Law of 1924, also known as the Johnson-Reed Act, restricted immigration quotas based on a ranking system developed by psychologist Henry H. Goddard. Goddard used the work of psychologist Robert Yerkes, who had created a controversial system of intelligence tests ranking races in order of perceived intelligence. This system formed the basis for the national-origins formula used to determine immigration quotas, which heavily favored immigrants from northern and western Europe while limiting those from Eastern and Southern Europe, as well as Asia and Africa.

Laws to Regulate Immigration,such as the Immigration Law of 1924,were