Definition
A human-factors phenomenon in which individuals exert less effort when working as part of a group than when working alone, often because they assume other group members will pick up the slack or that their own contribution will go unnoticed. In aviation, it is recognized as a crew resource management concern that can degrade monitoring, cross-checking, and shared decision-making in multi-crew operations.
Plain English
When people work in a team, some of them quietly do less than they would on their own, assuming someone else will handle it. In a cockpit, that can mean a pilot stops watching as carefully because they think the other pilot has it covered.
Context Anchor
Seen in crew coordination, training flights, group preflight checks, and any situation where more than one person is responsible for completing or verifying a task.
Derivation
‘Loaf’ in this sense means to idle or avoid work. ‘Social loafing’ is a term from social psychology research describing the measurable drop in individual effort that occurs in group settings. Knowing the origin helps explain why the term sounds informal — it names a behavior, not a procedure.
Why Pilots Care
In the cockpit it can cause one pilot to unconsciously rely on the other, leading to missed checks or slower responses to problems.
Analogy
Like helping friends move a heavy couch and gradually doing less lifting because you assume the group effort will still get it done.
Intuition Check
Social loafing is not about being friendly or simply taking a break. It means reduced personal effort because responsibility feels shared with the group.
Example Sentence 1
The CRM instructor warned that social loafing can creep into long two-pilot flights when both crew members start to assume the other is monitoring the autopilot.
Example Sentence 2
After the long flight the first officer realized social loafing had reduced his monitoring and committed to staying fully engaged on the next leg.