Correction
In the article "Overgeneralization of Conditioned Fear as a Pathogenic Marker of Panic Disorder" by Lissek et al. (published online November 16, 2009; doi: 10.1176/appi.ajp.2009.09030410), a data point was missing from one of the graphs in Figure 2. A corrected version of the article was posted on November 17, 2009. This change has been made for the article's print appearance in the January 2010 issue and for its online posting as part of that issue.