Exploring researchers' perspectives on authorship decision making.

Authorship guidelines portray authorship decisions as being black and white, effectively sidestepping key dimensions that create ethical shades of grey. These findings show that researchers generally recognise these shades of grey and in some cases acknowledge having bent the rules themselves. Sometimes their flexibility is driven by benevolent aims aligned with their own values or prevailing norms such as inclusivity. At other times participation in these practices is framed not as a choice, but rather as a consequence of researchers' vulnerability to individual or system factors beyond their control. Taken together, these findings provide insights to help researchers and institutions move beyond recognition of the challenges of authorship and contribute to the development of informed, evidence-based solutions.