"One person did nothing" is the most common group-project complaint there is, and the advice that follows is almost always about that one person — talk to them, report them, do their part yourself. The habit that actually prevents this problem has nothing to do with anyone's effort. It is a single step at the very start that most groups skip.
The Skipped Step Is Defining the Problem Before It Exists
A group that starts working before anyone has said out loud who is doing which specific part has not defined a problem — it has skipped defining one. "We'll all just pitch in" sounds cooperative and is actually the absence of a plan, which is exactly the condition where one person quietly ends up doing more.
What Dividing Tasks Actually Looks Like
Specific enough that two people would agree who is responsible for what: not "Sam does the research part" but "Sam finds and reads the three sources by Wednesday, and brings one fact from each to share." Vague division produces the same uneven outcome as no division, just with an extra step that felt like planning.
When It Still Goes Wrong Anyway
Tasks can be divided clearly and someone can still not do theirs. At that point the problem has changed — it is no longer "we never planned", it is a new problem with its own cause, and it needs the same steps applied fresh: name what specifically is not happening, find out why before assuming, generate more than one option for handling it, and choose one rather than silently absorbing the extra work.
Absorbing the Extra Work Quietly Is Not a Decision
Doing someone else's part without saying anything feels like solving the problem because the project gets finished. It solves this project and guarantees the next one starts from the same unaddressed cause, because nothing about the pattern was ever named.
Where This Gets Scored
The free Problem-Solving & Critical Thinking test includes a group-project scenario built around exactly this pattern, scored under Problem-Solving Steps for whether the sound response names and addresses the actual cause rather than the loudest symptom.