Interinstrumentvariabilitet

Interinstrumentvariabilitet is a term used in research to describe the differences in results or measures obtained from different instruments or tools used to assess a particular phenomenon or attribute. It refers to the variability or inconsistency in data or measurements that arises from using different instruments or tools to collect the same data.

This concept is particularly relevant in the context of psychological research, where different scales or questionnaires may be used to assess various psychological constructs such as personality traits, emotional states or behaviors. Interinstrumentvariabilitet can occur due to a variety of factors, including differences in the wording or format of questions, response scales or modes of administration (e.g. paper-and-pencil, computerized or self-administered).

Researchers have been aware of the issue of interinstrumentvariabilitet for some time, and it has been acknowledged as a source of error or variability in research results. Studies have shown that differences in instrumentation can lead to differences in findings, even when the same population or sample is being studied.

In order to mitigate the effects of interinstrumentvariabilitet, researchers often use a range of strategies, including the development of normative data for different instruments, psychometric evaluation of new instruments, and the use of established, widely-validated measures where possible. Despite these efforts, interinstrumentvariabilitet remains an important area of consideration for researchers seeking to ensure the consistency and generalizability of their findings.