{% load otree %}

Task 2 - Instructions

{% if player.treatment == "Motivated" %} What is this experiment about?

Climate change is a global threat. In this experiment, you can donate some of the {{ Constants.endowment }} Points you earned through your work in Task 1 to climatecare.org, an organisation that eliminates CO2 emissions from the atmosphere. Your donation will reduce real CO2 emissions in the atmosphere.

You will see {{ num_projects }} projects, which differ in price and CO2 emissions saved. You make your decisions of whether or not to donate to these projects in Task 3 of the experiment. Before that, however, you have to estimate how many CO2 emissions will be eliminated through your donation.

{% endif %} The Estimation Task

In this task, you are asked to estimate the number of Xs in a matrix. You can find an example image of a matrix in the video below. There are between 0 and 400 Xs in a matrix. Each matrix consists of 20 rows with 20 letters each.

{% if player.treatment == "Motivated" %}

Each matrix belongs to one of the projects to which you can donate in Task 3. Each X in a matrix represents {{ Constants.real_world_kg_co2_per_x }} kg of CO2 that your donation will eliminate. This means that if a matrix contains, for example, 100 Xs, your donation to this project will eliminate 50 kg of CO2 which corresponds to the emissions caused by driving 180 miles in an average car. When you submit the estimate, you will also see the price it will cost to donate to this particular project. Prices can range between {{ Constants.min_price }} and {{ Constants.max_price }} Points.

{% endif %}

You get to see each matrix for only {{ Constants.sec_per_matrix }} seconds. Then you will be automatically taken to the page where you have to submit your estimate of the number of Xs. You have {{ Constants.sec_to_answer }} seconds to enter your estimate. If you don't submit your guess in time, your payments for that decision will be forfeited. If you fail to submit your estimate on time twice, you will not be allowed to continue the experiment and will also forfeit your participation fee. Note that the timer keeps running even if you try to refresh the page. So you cannot gain time by refreshing the page. It is therefore important that you try to answer with your best guess within the {{ Constants.sec_to_answer }} seconds.

{% if player.treatment == "Motivated" %} Static Image {% else %} Static Image {% endif %}
Click on the 'Play'-button to watch a real-time recording of the decision page (no audio needed).

Your bonus payments in this task

You will earn {{ Constants.beliefs_fixed_payment }} Points for submitting your estimate on time if a round of this task is selected for payment. Depending on the accuracy of your estimate, you can earn up to {{ Constants.beliefs_max_accuracy_bonus }} Points more. In particular, the closer you are to the correct number of Xs, the more you earn. So if you get the correct number of Xs, you will earn {{ Constants.beliefs_max_payment }} Points. The farther your estimate is from the correct number of Xs, the less you earn. If you miss the number of Xs by more than 200, your additional earnings for accuracy in this task are zero.

Your bonus for accuracy is based on a mathematical formula. It is not necessary that you understand the formulas exactly, you just need to understand that the closer your estimate is to the true number of Xs in a matrix, the more you earn. Whether you overestimate or underestimate the number of Xs will affect your pay in the same way. If you want to see the exact formula, click here.

Comprehension Questions

{% formfield player.cq1 label="Your bonus payment in this task depends on the accuracy of your estimate of the number of Xs." %} {% formfield player.cq2 label="What is your extra fixed payment (in Points) for completing the task on time?" %} {% formfield player.cq3 label="In this task you have to stay alert because you have only 15 seconds to give your estimate." %} {% formfield player.cq4 label="How many Xs can there be in a given matrix?" %}
Before we start with the actual task, we give you the opportunity to familiarise yourself with the task in 3 practice trials. Your answers in these practice trials will not affect your final payment. Remain attentive as you will only be admitted to the payment-relevant part if you answer in time and pass some attention checks.