In my previous blog post, I noted that reliability and validity are two essential properties of psychological measurement. Measures of intelligence, personality, vocational interests, and so forth ...

By: Yeeun Lee, Master’s Student at the Harvard T.H. Chan School of Public Health and Research Assistant at the Maternal Health Task Force Whether you know it or not, indicator validity matters to you.

Routines in a data entry routine that test the input for correct and reasonable conditions, such as account numbers falling within a range, numeric data being all digits, dates having a valid month, ...

Validity is a criterion for the quality of a scientific analysis and its findings. An analysis is valid when it measures what it is supposed to measure, i.e. if the ascertained data truly answer the ...