Measuring the ROI of Design Thinking and developing a structure for metrics is still very much a work in progress. Two studies one from McKinsey and the other from

Design thinking outcomes that we can count, such as gained leads or increased adoption rates, are the most easily measured, but the most significant value is created by outcomes which are difficult to quantify. Design thinking changes perception - the way people feel and see things. Going deeper, it changes the interactions with people and the innovation conversation itself.