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General Setting

You will observe the price development of 3 fictional stocks (stock A, B, and C). Each stock is either in a good state or in a bad state, which is fixed throughout the entire experiment. The state of a stock is randomly determined at the beginning of the experiment.
Stock prices change in every period. The state of a stock determines the likelihood of price changes in every period as follows:

Price Change Good State Bad State
+6 25% 15%
+3 35% 25%
-3 25% 35%
-6 15% 25%

For example, if a stock is in the good state, the probability of a price change of +6 is 25% whereas it is only 15% when a stock is the bad state. As such, price changes are indicative of the randomly determined state of each stock.
The states of the stocks are independent of each other, i.e. the price changes of stock A are not indicative of the state of the other stocks and vice versa.
The stocks have different starting prices which are unrelated to the states of the stocks.

On the next page the task is described.


Task

You will see the historic price development from periods -3 to 0 to be able to form initial estimates about the states of the stocks in period 0. You will then see the price development from periods 1 to 3 and are asked to provide your estimates about the states of the stocks in every period.

In particular, your task in period 0 as well as in periods 1 to 3 is the following:
You have to choose the best stock, i.e. the stock with the highest likelihood of being in the good state. Moreover, you have to provide your estimates of the likelihood that the stocks are in the good state by entering an integer percentage number between 0% and 100%.

On the next page the compensation scheme is described.


Compensation

In addition to the participation fee of £1.25, you can earn a bonus payment in the estimation task.
In every period one of your estimates is randomly selected. Your compensation increases by £0.30 for each estimate which is within 5% of the correct statistical likelihood that the stock is in the good state (e.g. the correct likelihood is 50% and your estimate is between 45% and 55%).

If you feel that you understand the instructions, press "Next" to proceed to answer a few comprehension questions before the experiment starts.


Please answer the following questions to demonstrate that you understand the setting.

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