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38 Cards in this Set
- Front
- Back
Expected utility theory - rational
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-levels of wealth
-risk averse -correct probability |
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Prospect theory - behavioral
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-changes in wealth
-risk averse in gains, risk seeking in losses -probability weights |
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Bernoulli paradox
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Wealth has decreasing marginal utility
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Allais paradox
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-assigning different expected utility to identical problems
-Prospect theory explains with probability weighing function |
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Is sensitivity (steepness) higher or lower in losses?
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higher
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Segregation
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updated reference point
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Integration
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no updated reference point
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Length of evaluation window
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profound effect on utility
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What leads to misjudgment of probabilities?
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1) overconfidence
2) representativeness 3) belief perseverance 4) regret aviodance 5) availability bias |
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How does wishful thinking (overconfidence) contribute to misjudgment of probabilities?
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-people have unrealistically rosy views of their abilities
-the more important the task, the greater the optimism |
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How does representativeness contribute to misjudgment of probabilities?
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-make inferences from sample too quickly
-hot hand effect -gambler's fallacy effect (black is due) |
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How does belief perseverance contribute to misjudgment of probabilities?
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-people cling to opinions too tightly & for too long
-confirmation bias: misinterpret evidence to go along with beliefs |
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Regret avoidance
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-trying to turn failures into successes
-hold losing stocks -double up -sell winning stocks to avoid future losses |
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Availability bias
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-more weight on known information
-invest locally |
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Selective perception
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-ignore unfavorable information
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Contrast effect
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Contrasting information attracts more attention
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How does order of information matter?
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Primacy effect: more influence from first-mentioned
Priming effect: piece of information acts as catalyst |
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How do people try to avoid regret?
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-favor inaction over action
-favor routine over innovative |
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What does mental accounting entail?
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-Narrow framing
-Dynamic aggregation |
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Narrow framing
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-evaluate individual decisions separately from other portions of wealth
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Dynamic aggregation
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-simple repetitions are unattractive if evaluated one at a time
-more willing to take risks if evaluate performance infrequently |
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How do people decide to aggregate or separate events?
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whichever gives higher utility
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Neoclassical asset pricing
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decide to save or consume based on highest utility over time, determines portfolio
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How do investors determine prices of assets (Consumption CAPM)?
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How they contribute to consumption over time (asset that does well in recession trades at premium)
-beta > 0 trades at discount |
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What are the bads of CCAPM?
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-equity premium puzzle
-excess stock return volatility -predicts high correlation between stock returns & consumption growth |
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Equity premium puzzle
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-requires too high degree of risk aversion
-no premium over 19th century but some in 20th century |
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Excess volatility puzzle
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stock markets are supposed to be less volatile than they are
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What does the portfolio allocation perspective say about the equity premium puzzle?
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people must be confused about the relative safety of different investments over long horizons
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Why might investors be unwilling to bear risks of equities?
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myopic loss aversion:
1) loss aversion 2) short evaluation period |
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Do organizations display myopic loss aversion?
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-produced by conflict of interest between pension fund managers and stockholders
-performance evaluation in short window affects managers job but pension has long window |
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Explanation of excess volatility puzzle
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-run-up in price = less risk averse
-drop = more risk averse |
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What is the problem with investors desiring cash dividends?
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-tax inefficient
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How might cash dividends be explained rationally?
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1) Transaction costs
2) Signaling 3) Market monitoring 4) Agency costs |
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What are the behavioral explanations of cash dividends?
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1) Self-control
2) Mental accounting 3) Regret aversion |
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How do investors narrow down their stock possibilities?
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-small set of attention-grabbing then use preferences
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Truth effect
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repetition creates a feeling of greater likelihood for something to be true
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Does investor attention move share prices?
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yes
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Does investor attention have a short-term or long-term effect on share prices?
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depends on for how long you are able to capture investors' attention
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