Of fifteen widely used psychological measures put through four separate validity tests, exactly one passed all four, and the field's response has been to publish more measures — the main archive now holds 73,646, over half of which have never been used a second time

Of fifteen widely used psychological measures put through four separate validity tests, exactly one passed all four, and the field's response has been to publish more measures — the main archive now holds 73,646, over half of which have never been used a second time

Psychology's measurement crisis keeps deepening as thousands of unvalidated assessment tools proliferate, yet the field rarely acknowledges that many may be measuring nothing at all.