The ACM Queue article didn't clearly explain what they meant by productivity or how they evaluated it. [1] appears to do better by classifying self-reported ou

The ACM Queue article didn't clearly explain what they meant by productivity or how they evaluated it. [1] appears to do better by classifying self-reported outcomes into positive and negative categories. Classifying comments into the high or low productivity category seems challenging, but at least they provided a few examples. More importantly they identified a range of other positive and negative outcome categories.