The training itself is set up in studies so that participants attend a set number of sessions over a given period of time that widely varies between studies. This can vary anywhere from two weeks to a span of eight weeks. The time spent in sessions also ranges, with some studies being as short as fifteen minutes to other studies lasting forty minutes. Studies can take place in the lab, or even at home with researchers keeping in touch through weekly phone calls. There is no universal way to set up the training schedule, since all schedules tended to vary to at least to some degree. The effects are tested immediately after training is completed and again a few months after, or even up to a year later, to see if the training outcomes are still in place. Testing and evaluation can be based on the measures of academic efficiency, ratings of the individual's symptoms from teachers and parents, comparing the experimental to the control groups of the study, and self-report measures.