 He was a Guggenheim Fellow in 1977–1978, a Fellow at the Center for Advanced Study in the Behavioral Sciences in 1977–1978, and a Fellow at the Netherlands Institute for Advanced Study in the Humanities and Social Sciences in 1989.Jennings specializes in political socialization and public opinion, political psychology, comparative political behavior, gender and politics, and research design and data collection.He is most recognized for his research of the intergenerational transmission of political attitudes in the U.S. through youth-parent panel study, which dates to his earliest publication on the topic in 1968 and has become a longitudinal study with four waves.