Scientific approach

Each of the ZebraZone models is all scientifically structured and executed investigations. They always meet two basic requirements of scientific and high-performance models.

Guaranteed validity and reliability

Securex guarantees that the models are valid and reliable:

Validity: the questionnaires measure what they are required to measure. We distinguish between three forms:
- Construct validity: all aspects that should to be covered by the research area are properly operationalised.
- Validity of content: The models are factually correct. The questions are a representative sample of the concept to be measured.
- Face validity: researchers, clients, academicians, etc. have the impression that the models are valid and that they measure what they should measure.
Reliability: the Securex measuring tools are accurate and precise. We guarantee this by using advanced statistical models and techniques.