Session 3

Welcome

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As explained to you already, the experiment will give you the opportunity to work on the counting zeroes task in session 4 (on 26.06.2018). The website will contain 40 screens with tables of ones and zeroes; each screen will contain 10 tables with 40 numbers each, and you will have to count the number of zeroes in each table.

As a reminder, a table looks as follows:

Table 1

How many zeroes does Table 1 contain?


We will now remind you of the payment rules for these tasks. Each screen will comprise a button "Submit" to submit your current answers, and a button "Finish" to leave the task and terminate the session. As soon as you submit a screen with correct answers, this screen counts as completed. You will be rewarded for every batch of 5 screens that you complete, even if you need several attempts for one (or several) of these 5 screens.

For the first batch of 5 screens you receive 5 Euros. For screens 6-10 you receive 4 Euros. Hence, if you complete 10 screens you will receive 9 Euros. The following table displays the bonus associated with every batch of 5 screens, as well as the cumulative earnings. This table will be shown to you again every time it is relevant for your decisions.

Number of screens completed Payment for this batch of 5 screens Cumulative payment
1-5 5 Euros 5 Euros
6-10 4 Euros 9 Euros
11-15 3 Euros 12 Euros
16-20 2 Euros 14 Euros
21-25 1.5 Euros 15.5 Euros
26-30 1 Euro 16.5 Euros
31-35 0.5 Euros 17 Euros
35-40 0.1 Euros 17.1 Euros

There is an additional rule. Today, we will already ask you how many screens of tables (for session 4) you would like to complete. Then the computer will choose randomly which of the following payment rules will apply. You have already seen these rules in session 1.

Rule 1 - BINDING - with probability 5% : The decision that you make today will be binding. This means that you will not be able to complete more screens in session 4 than the number you choose today, and that you will not receive any bonus for that session if you complete fewer screens than the number you choose today.
Example: Suppose that you decide today to complete 10 screens on 26.06.2018. If Rule 1 applies, this means that you will have to complete exactly 10 screens of the counting zeroes task on 26.06.2018. If you complete fewer than 10 screens you will not receive any earnings for that session. If you complete 10 screens you will receive the bonus corresponding to 10 screens. You will not have the opportunity to complete more than 10 screens.

Rule 2 - FREE - with probability 95% : The decision that you make today will not be binding. This means that you will be free to choose how many screens to complete on 26.06.2018 irrespective of the decision you make today. You will then be paid for each batch of 5 screens completed according to the payment scheme described above.

You will report your decision on the next screen, and we will then immediately inform you of the rule (1 or 2) selected by the computer.

Questions

Before we ask you to report your decision, we will ask you three questions to check your understanding. Your answers have no influence on your earnings, but we will proceed to the next screen only when you answer all questions correctly.

To answer the next questions, suppose that you decide today to complete 10 screens in session 4.

Note: the number of screens used in the description and in the example was randomized.

Suppose that the computer selects Rule 1 ("Binding") and you complete 8 screens on 26.06.2018. How much will you earn for session 4?



Suppose that the computer selects Rule 2 ("Free") and you complete 8 screens on 26.06.2018. How much will you earn for session 4?



Suppose that the computer selects Rule 1 ("Binding") and you complete 15 screens on 26.06.2018. How much will you earn for session 4?