Investigators have used various experimental paradigms to study how individuals with different emotional disorders process emotional information. However, little research has been done on relatives of individuals with emotional disorders, despite developments in the area of emotional contagion. In the current experiment, children of adults with posttraumatic stress disorder (PTSD) (n = 18) and control participants (n = 21), ages 9–17 years, participated in a modified Stroop color-naming task. The results indicated that the children of adults with PTSD showed increased Stroop interference for threat-related relative to neutral words and to the performance of the controls. These findings are discussed with respect to the literature on information processing in PTSD and emotional contagion in families.