In Chapter 01 we said that a paper is "the medium through which you take on accountability for your own belief." This chapter divides that responsibility into four: who bears it (authorship), whether you are honest with the data (integrity), whether others can verify it (reproducibility), and how you treat others' work (attribution and citation).
A thesis is internal responsibility; a journal is external verification. Writing a thesis alone leaves the inquiry inside the lab. Inquiry is completed in the public space (Lab → Scientific Community), and the claims that go out into that space carry the responsibilities described below.
Being an author does not mean having your name listed. It means standing in the position of answering, when questioned, for the paper's claims.
Providing data only, or receiving supervision only, belongs in the acknowledgments, not the author list. Conversely, once your name is on the author list, "that part wasn't mine" does not hold. Author order is based on contribution: tentatively set before writing, re-evaluated before completion, and fixed with everyone's agreement before submission. Procedural details are in Lab Forum Lectures "Writing Papers — Overview".
Falsification, fabrication, and plagiarism are the three cardinal violations of research ethics, and there is no room for debate. But the question of responsibility starts much earlier.
Integrity is a matter of ethics and, at the same time, of the strength of the paper. A paper that writes its limitations honestly withstands review better.
A claim that has gone out into the public space is meaningless unless others can question it. Being able to question means being able to follow the same steps.
Reproducibility is for others and, at the same time, for your future self. Six months from now, you are another person.
When you use others' data, ideas, or figures, always cite the source. Citation is an obligation and, at the same time, proof of your own positioning (Chapter 03, Step 1). Use copyright-free figures, or cite the source. Text and figures made with generative AI are also subject to disclosure of how and to what extent they were used.
Responsibility is not a burden; it is the other side of holding a belief. Say "this is what I think," and answer when questioned. Becoming a researcher means standing in that position. Even as an undergraduate, that position begins the moment you write your name on your thesis.