How does the causal chain model help investigators?

• A. It Sequences Events and Identifies Causal Links
• B. It Replaces Data Collection
• C. It Assigns Blame to One Person
• D. It Documents Only the Final Outcome

Answer: (A)

The key idea is that the causal chain model lays out the sequence of events and the causal links between them, showing how one event leads to another. In an investigation, you map from the initial trigger through intermediate actions and failures to the final outcome. This visualization makes it clear where a misstep or equipment problem started, how safeguards failed, and what links in the chain allowed the accident to progress. By tracing these connections, investigators can distinguish root causes from mere symptoms and identify corrective actions that would prevent recurrence. It’s a way of organizing evidence and reasoning about how different factors interact over time, rather than simply collecting data, assigning blame, or documenting only the final result.