What is a reliable method to ensure an employee understands how to complete a task after instruction?

• A. Ask the employee if your explanation was clear.
• B. Watch the employee perform the task several times.
• C. Have the employee explain it back to you.
• D. Have the employee perform it once while you observe.

Answer: (B)

Observing actual performance across multiple attempts best shows that someone truly understands how to complete a task and can do it correctly and safely. When you watch the employee perform the task several times, you verify that they remember each step, apply the correct technique, follow proper sequencing, and maintain safety and quality standards. Repetition also lets you identify small inconsistencies or errors that might not show up in a conversation, and you can give targeted feedback to reinforce proper practice. In a lab setting, this kind of hands-on proficiency is crucial for animal welfare, data integrity, and safety.

Relying on a verbal check—asking if the explanation was clear—depends on self-assessment, which can be misleading. Having the employee explain the task back to you shows they understand the steps, but it doesn’t guarantee they can perform them correctly under real conditions. Observing them perform it once captures some evidence, but a single trial may miss mistakes or fatigue effects. Multiple performances with observation provide a reliable demonstration of true competency.