**Thank you for agreeing to take part!** In this study, you will be asked to look at some commits and evaluate different variants of corresponding commit messages. On the right, you can see the code changes included in the commit. On the left, there are tabs, each containing a variant of a commit message describing the code changes, as well as five questions about the commit message. In the first three questions, you are given a statement about the commit message and asked to state your level of agreement with it - from 1 (strongly disagree) to 5 (strongly agree). Here are some examples of the responses expected for some commit messages: **Code changes: change the color of button from green to blue in the file.py python file.** **The information provided in the commit message is consistent with the code changes.**
1 (strongly disagree): _"fix: change the background color from white to yellow"_
5 (strongly agree): _"change the color of the button from green to blue"_ **The commit message cannot be substantially shortened without loss of important information.**
1 (strongly disagree): _"Update slider color in file.py

The button color in the application Python file (file.py) was changed from green to blue. The color has been changed to blue to improve visibility or provide a more user-friendly UI. This change is purely cosmetic and does not affect the functionality of the software."_
5 (strongly agree): _"change the color of the button"_ **The commit message is easy to read and to understand.** 1 (strongly disagree): _"Alter the hue of the interactive clickable element transitioning from the shade likened to that of fresh grass towards that of the clear midday sky"_
5 (strongly agree): _"feat: Update button color from green to blue in file.py"_ In the fourth question, you are asked to state your overall impression of the commit message (from 1 - the message is very low quality, to 5 - the message is perfect). In the last question, you can leave an additional text comment about the commit message. _This question is optional._ After completing the form for one of the commit message variants, submit it using the button below. *The corresponding form should be submitted separately for each message variant.* After submitting all forms, you can move on to the next commit message by pressing the bottom button. If, for some reason, you do not want to submit one or more forms for the current commit, you can skip it and continue to the next commit by pressing the "Skip the current sample" button in the upper right corner.