Final answer:
A security with high beta outperforms the market when the market is bullish and underperforms the market when the market is bearish.
Step-by-step explanation:
A security with high beta (>1.0, high volatility) outperforms the market when the market is bullish and underperforms the market when the market is bearish. Conversely, a security with low beta (<1.0, low volatility) underperforms the market when the market is bullish and outperforms the market when the market is bearish.