This research examines the dynamic relationship between Americans' belief in the American Dream—an optimistic vision rooted in national ethos—and their perceptions of its attainability. While many continue to support the concept itself, we analyze how public confidence changes over time.

Drawing on a new macro-level measure covering 1973-2018, our findings reveal:

➡️ The American Dream Concept: Long considered central to U.S. identity as an ideal of upward mobility achievable through hard work.

➡️ Belief Dynamics: Public confidence in the dream's attainability significantly shifts over time—rising with economic prosperity and falling during periods of declining opportunity.

➡️ Key Findings: The measurement shows responsiveness to changes in social mobility, income inequality, and economic perceptions. As inequality increases, belief declines.

This work demonstrates how macro-level political attitudes are influenced by real-world conditions impacting the perceived viability of core national ideals.