Evidence-Based Software Engineering

EBSE for...

Glossary - validity


This is concerned with the degree to which we can 'trust' the outcomes of an empirical study, and is usually assessed in terms of four commonly-encountered forms of threat to validity. The following definitions are based upon those used in Shadish et al. (2002). internal Relating to inferences that the observed relationship between treatment and outcome reflects a cause-effect relationship. external Relating to whether a cause-effect relationship holds over other conditions, including persons, settings, treatment variables, and measurement variables. construct Relating to the way in which concepts are operationalised as experimental measures. statistical conclusion Relating inferences about the relationship between treatment and outcome variables.

This entry was last updated on 5 August 2008