his brother, Ni⋅ko⋅laas /ˈnɪkələs;Du.ˈnikoʊˌlɑs/Show Spelled Pronunciation[nik-uh-luhs;Du.nee-koh-lahs]Show IPA, (“Niko”), 1907–1988, British ethologist, born in the Netherlands: Nobel prize for medicine 1973.
Tin·ber·gen (tĭn'bər-gən, -běr'KHən) Dutch economist. He shared a 1969 Nobel Prize for the application of mathematics and statistical methods to economics. His brother Nikolaas (1907-1988), a Dutch-born British ethologist, shared a 1973 Nobel Prize for studies of individual and social behavior patterns.