The membership of the National Academy of Sciences includes scientists in the [[physical science|physical sciences]] and [[social science|social scientists]]. For example, the psychologist Daniel Kahneman is a member of the National Academy of Sciences.<ref>[http://nationalacademyofsciences.org/member-directory/members/892035.html Daniel Kahneman - NAS member directory listing]</ref> The Proceedings of the National Academy of Sciences (PNAS) has content that spans the biological, physical, and social sciences.<ref>[http://www.nasonline.org/ Mainpage of NAS website]</ref> | The membership of the National Academy of Sciences includes scientists in the [[physical science|physical sciences]] and [[social science|social scientists]]. For example, the psychologist Daniel Kahneman is a member of the National Academy of Sciences.<ref>[http://nationalacademyofsciences.org/member-directory/members/892035.html Daniel Kahneman - NAS member directory listing]</ref> The Proceedings of the National Academy of Sciences (PNAS) has content that spans the biological, physical, and social sciences.<ref>[http://www.nasonline.org/ Mainpage of NAS website]</ref> |