Episode snippets: test item formats and how the item format is related to the effectiveness of the assessment procedure; do we ever match the measurement modality to optimize to what we want to know about the construct? (No.) The Laura Petrie “oh Rob” moment is born; equivalencies and validities, the hard work of writing test item files for intro psych publishers, the difficult task of predictive validity studies, Rob’s single diagnostic assessment item technique, quibbling over the word “best”