Threats to Internal Validity

Threats to internal validity are factors that can interfere with accurately determining whether a study’s results are caused by the tested intervention, rather than other unrelated factors. These threats include things like participants changing over time, differences between groups not accounted for, or external events influencing outcomes. They can lead to incorrect conclusions about cause and effect. Ensuring internal validity involves controlling or accounting for these potential issues, so the study accurately reflects the true relationship between variables.