The goal of the experiment we want to conduct a controlled experiment to compare visual and textual industrial methods for security risk assessment methods with respect to how successful they are in identifying threats and security controls. The context of the experiment consists of MSc students in Security Engineering who identify a list of threats and security controls for an advanced metering infrastructure scenario from the Smart Grid domain.

During the experiment we distributed among participants two type of questionnaires:

• Pre-task questionnaire to collect some information about participants and thier background: Q1.
• Post-task questionnaire to collect participants' perception of methods: Q2.

For individual interview we used the following interview guide: guide.