Lab equipments:

Drop test	Vibration test	Temperature test

Salt spray tester	Humidity Chamber

Why is it important to choose measures with good reliability?

Having good test re-test reliability signifies the internal validity of a test and ensures that the measurements obtained in one sitting are both representative and stable over time. Often, test re-test reliability analyses are conducted over two time-points (T1, T2) over a relatively short period of time, to mitigate against conclusions being due to age-related changes in performance, as opposed to poor test stability.

Without good reliability, it is difficult for you to trust that the data provided by the measure is an accurate representation of the participant’s performance rather than due to irrelevant artefacts in the testing session such as environmental, psychological or methodological processes.

Often your aim in research will be to evaluate the impact of an intervention on an individual’s performance. Without the confidence that the measure you’ve chosen is reliable, it is difficult to ascertain whether differences in performance pre and post-intervention are genuinely due to the intervention provided and not an artefact of the tool.

A tool with low reliability can therefore mask the true effects of an intervention, which could have serious ramifications on the conclusions drawn, and therefore the future progression of that intervention.

QC test:

QC flow chart:

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Quality is the foundation of our business