Every project must ensure the data and conclusions are both valid and reliable. Validity refers to the accuracy of the measurement in a test; reliability refers to the stability or consistency of scores. In other words, a test must measure what it says it does (validity), and it must be consistent in its reports (reliability).

For this week’s initial thread, share an example of a test or experiment and discuss the validity and reliability of that test. Your example can come from your daily life, from reading the textbook or looking for online examples, or even from a hypothetical situation.