PSB has also conducted studies for the Aspen Institute and the related Aspen Ideas Festival . In partnership with '' Time '' magazine and the Aspen Institute , in 2011 PSB polled Americans on their opinions of the decade following the September 11th terrorist attacks . The following year , the company conducted polls on Americans ' attitudes towards the Patient Protection and Affordable Care Act . This research was commissioned by '' The Atlantic '' and the Aspen Institute
September 11th terrorist attacks
September 11 attacks
Penn Schoen Berland