The study of human perception

Study information

Dear Madam or Sir:

The following study is part of a research project by the Chair of Experimental Psychology at the University of Mannheim in Germany. The goal of the study is to find out more about how humans perceive movies. In this study we will ask you to watch a short movie clip and answer several questions afterwards. Taking part in this study is entirely voluntary and you may cease participation at any time without any adverse consequences.

However, in order to obtain useful data for our project, we kindly ask you to stay with us until the end. Participating in the study will take about 5-10 minutes.

Speakers or headphones required

To participate you need speakers or headphones on your computer. If you do not have speakers or headphones you cannot participate.


If you complete the study and answer all questions, you can participate in a lottery. The next lottery will be organized at the end of April, 2017 among all participants. 5 winners of the lottery will receive the prize - 20 Euros Amazon vouchers, which will be sent by email. If you want to participate in the lottery, you can leave your email address at the end of the study. The email address will be stored separately from your personal data and will be deleted after the end of the lottery.

If you are a student of the University of Mannheim, you will be also compensated according to the conditions written on the SonaSystems page. To prove that you participated in the experiment, at the end of this study you can enter your SonaSystems personal code. Your SonaSystems personal code will be deleted after the experiment.

Consent form of the study

There are no known physical, social, or legal risks involved in the study. The study employs variants of survey questions and experimental tasks that have been widely used in previous studies. The principal investigator of this study is Yury Shevchenko, a PhD student of the Chair of Experimental Psychology at the University of Mannheim in Germany. You may choose to receive a full description and rationale for this study, by e-mailing your request to yshevche(at) (Subject: Perception Study). The supervisor of this research is Prof. Dr. Arndt Bröder (broeder(at)

This study has been approved by the Mannheim University Ethics Committee (Schloss Mittelbau M 177, 68131 Mannheim, Germany, Tel. 0621/181-1381, email: taupitz(at)

Your answers and decisions will be analyzed and reported anonymously. In case of lottery participation, your email address will be stored separately from all other data and cannot be connected with your response profile. Due to the nature of the study, the anonymous data from your browser will be collected in the course of the study.

Click on the “I have read the information about the study, I certify that I am at least 18 years old. I agree to participate in the study” to indicate that you have read this form and understand the information above. By clicking on the radio button, you acknowledge that you have been informed of, and understand the nature and purpose of this study, and you freely consent to participate.