---
title: "Instrument effect"
chunk: 1/1
source: "https://en.wikipedia.org/wiki/Instrument_effect"
category: "reference"
tags: "science, encyclopedia"
date_saved: "2026-05-05T03:53:09.812579+00:00"
instance: "kb-cron"
---

The instrument effect is an issue in experimental methodology meaning that any change during the measurement, or, the instrument, may influence the research validity. For example, in a control group design experiment, if the instruments used to measure the performance of the experiment group and the control group are different, a wrong conclusion about the experiment would be reached, the research result would be invalid.


== References ==