Ewing said the panel would need to hire researches to do independent studies that would not be accused of bias.
More extensive studies will require more of the College Board's budget and could increase the price of the exam.
"Ideally the government should pay for this sort of research, but we have to and the cost comes out in the exam," Camara said.
The College Board plans to conduct a major study over the summer to weigh the effect of time on exam performance. The College Board plans to have high school juniors take the take an exam under regular and time and a half conditions, and though these results will not affect college admissions, the results of the survey will most likely be used in the panel's evaluation, Camara said.
--Staff Writer Nicole B. Usher can be reached at usher@fas.harvard.edu