Which theory describes a chain of events where removing a factor stops the accident?

Which theory describes a chain of events where removing a factor stops the accident?

• A. Swiss Cheese Theory
• B. Domino Theory
• C. Human Factor Theory
• D. Multiple Factor Theory

Answer: (B)

The concept being tested is that an accident results from a sequence of events, and preventing or removing one link in that sequence stops the accident from occurring. The Domino Theory expresses this idea by picturing a line of dominos: each event leads to the next, and if you remove or modify one link, the chain reaction stops before an injury happens. This theory is built on the idea that intervening at any point in the chain—before the final consequence—prevents the accident. Context helps: the classic Domino Theory often outlines a sequence such as social environment or personal fault leading to an unsafe act or condition, which then leads to an accident and finally injury. The key takeaway is the notion that breaking the chain at any point prevents the subsequent events. Why the other ideas don’t fit as precisely: the Swiss Cheese view focuses on defenses and latent failures, explaining how accidents occur when several layers fail to prevent them, which isn’t about a single removable link in a sequential chain. Human Factor Theory emphasizes how human limitations and design interactions contribute to errors, rather than a linear chain that can be interrupted by removing one factor. Multiple Factor Theory discusses many contributing factors across the system, but it doesn’t center on a single breakable sequence like the Domino Theory does.

The concept being tested is that an accident results from a sequence of events, and preventing or removing one link in that sequence stops the accident from occurring. The Domino Theory expresses this idea by picturing a line of dominos: each event leads to the next, and if you remove or modify one link, the chain reaction stops before an injury happens. This theory is built on the idea that intervening at any point in the chain—before the final consequence—prevents the accident.

Context helps: the classic Domino Theory often outlines a sequence such as social environment or personal fault leading to an unsafe act or condition, which then leads to an accident and finally injury. The key takeaway is the notion that breaking the chain at any point prevents the subsequent events.

Why the other ideas don’t fit as precisely: the Swiss Cheese view focuses on defenses and latent failures, explaining how accidents occur when several layers fail to prevent them, which isn’t about a single removable link in a sequential chain. Human Factor Theory emphasizes how human limitations and design interactions contribute to errors, rather than a linear chain that can be interrupted by removing one factor. Multiple Factor Theory discusses many contributing factors across the system, but it doesn’t center on a single breakable sequence like the Domino Theory does.