CONSENT TO PARTICIPATE IN A RESEARCH STUDY

Title of Study: Studies of Human Perception, Language, and Cognition

Principal Investigator(s): [anonymized for submission]

Important aspects of the study you should know about:

• Purpose: The purpose of the study is to examine the link between what we see and how we describe it — and in turn what this can tell us about how we conceptualize the world.
• Procedures: If you choose to participate, you will complete a simple task: You will be asked to look at, describe, sort, or remember things you see or hear. These things will include pictures, videos, sounds, or words and sentences. The tasks will be presented on a computer screen. If you participate in this experiment online, the tasks will be presented via your web browser. Responses will be made using a keyboard, mouse, and/or microphone. If in-person, responses may also be made using a button box. We will record your responses, how quickly you respond, and any verbal descriptions you provide. We may also ask you basic questions about yourself (e.g., your age, gender, and/or language background). After you finish the experiment, we will ask you about your experience. Before we start, we will explain the instructions to you clearly, and you can ask questions at any time (if you are participating online, you can contact the experimenter by email or through the messaging system on the online recruitment platform).
• Duration: This session will last about 9 minutes.
• Risks: Possible risks of participating in this research study are no greater than those encountered in daily life or during the performance of routine physical or psychological tasks.
• Benefits: There are no direct benefits to you for participation. However, your participation may contribute to our understanding of how perception, language, and cognition work.
• Costs and Compensation: If you decide to participate, there will be no additional cost to you. If you are participating for pay, you will be compensated $1.50. Online participants recruited via a platform such as MTurk, Prolific, or naodao will be paid through the platform’s compensation system; otherwise, online participants will receive an electronic Amazon gift card as payment. If you are participating in this study for an academic course, you may receive extra credit per the course instructor’s predetermined specifications. (If you choose not to participate or to terminate participation early, an alternative extra-credit option will be made available to you.)
• Participation: Taking part or not in this research study is your decision. You can decide to participate and then change your mind at any point.
• Contact Information: If you have any questions about the purpose, procedures, or any other issues related to this research study, you may contact the Principal Investigator, [anonymized for submission].

If you agree to participate in this research study, press the right arrow key on your keyboard to continue.

Welcome! In this experiment, you will be asked to make rapid decisions about the color of an object.

You will be presented with a series of trials. In each trial, one object will be gray, and the other object will be either purple or orange. After a second, one of the two objects will move towards the other object, hitting it. Sometimes the gray object will move first, and sometimes the other object will move first. When the two objects make contact, the gray object will always change color.

Press the right arrow key on your keyboard to continue.

Press the left arrow key on your keyboard to go back.

Sometimes, the gray object will turn purple. Other times, the gray object will turn orange. If the gray object turns target_color, press the spacebar. Press the key as quickly as you can once the gray object turns target_color.

If the gray object turns other_color, do not press anything .

The trials will pass very quickly, and they will progress automatically. Once the the object changes color, you will only have a brief period of time to decide whether or not to press the key. After each trial is complete, you will receive feedback on whether or not you were correct, and the next trial will immediately start.

Press the right arrow key on your keyboard to continue.

Press the left arrow key on your keyboard to go back.

Before proceeding to the main experiment, you will complete a brief practice phase. This phase will consist of ten trials. These trials are similar to the main experiment, but they will move much more slowly.

Remember: If the gray object turns target_color, press the spacebar. If the gray object turns other_color, do not press anything.

Press the spacebar to begin the practice phase.

Press the left arrow key on your keyboard to go back.

You have now completed the practice phase. You will now complete the main experiment, which will consist of 128 trials. These trials will be similar to those that you encountered during the practice phase. However, they will move much more quickly, and feedback will only consist of a quick border color change.

There will be a break halfway through (after 64 trials). At this point, you may take a break for as long as you would like, and you may continue the experiment when you are ready.

Remember: If the gray object turns target_color, press the spacebar. If the gray object turns other_color, do not press anything.

Press the spacebar to begin the main experiment.

BREAK

Feel free to take a break for as long as you would like. When you are ready, press the right arrow key to continue the experiment.

Congratulations! You have now completed the experiment. Please provide brief responses to the following questions, then press the right arrow key on your keyboard to be redirected to Prolific.

What strategy did you use to respond (if any)? What did you pay most attention to?

What do you think was the topic of this experiment?

Feel free to write any other comments here:

CORRECT!

INCORRECT.