Struggletime was an integral feature of the intervention and teacher deviation to reduce struggle can impact the efficacy of the intervention.Strugglewas intended to be positive, to promote development of persistence with problem-solving and to support individuals to consider strategies that might be us...
We also conducted a regression discontinuity analysis (Imbens & Lemieux,2008) around the data of the event, using the mean squared errors (MSEs) as indicators to choose the optimal transgression date. We test different transgression dates as the event date (from the date of the event [15th Se...