The Yield Curve
A plot of bond yields against maturities for bonds of the same credit quality; normally upward-sloping because lenders demand more yield to commit money for longer.
Most SIE questions hand you a scenario — “short-term yields are higher than long-term yields, what does this signal?” — and make you name the curve and its message. The tell is the relationship between the short and long end, not the absolute level of rates. Memorize three shapes: normal (upward) = expansion ahead, inverted (downward) = recession warning, flat = transition. A rarer fourth, the humped curve (intermediate yields highest), also flags an inflection. Read which end is higher before anything else.
The classic trap is blaming the wrong actor. The yield curve is a market-priced signal, whereas monetary policy is the Fed deliberately moving the short end via the fed funds rate — they interact but aren’t the same thing. Don’t confuse it with economic indicators: an inverted curve is itself a leading indicator (it’s a component of the Conference Board’s Leading Economic Index), not a separate statistic to sort. And tie it to the business cycle — inversion typically precedes the peak-to-contraction turn. Hook: inverted = “upside-down economy.”
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