Dr. Boaler uses a link to a study by University of Chicago Psychologists, complete with a graph plotting anxiety vs achievement. The study makes references to the need for STEM professionals but uses PISA math data. The use of PISA math results seems inappropriate in this context as PISA is hardly a measure of the mathematical progress needed by 15 year-old students on their way to becoming STEM professionals.
16% - Florida, USA
10% - UAE
9% - Quebec, Canada
7% - Florida, USA
It seems there is a growing cottage industry blending psycho-babble with concern about how feelings are effecting math achievement. Unfortunately many administrative decision-makers are unable to separate wheat from chaff. If only there was more concern about finding, developing and using effective instructional materials and practices, what a wonderful world it might be.