Anger prone individuals are likely to hold the hostile attribution bias, which reflects the tendency to interpret the ambiguous actions of others as reflecting hostile intent (Wilkowski & Robinson, 2008). Recently, researchers have developed computerized interpretation bias modification (IBM) protocols intended to efficiently reduce interpretive biases. These treatments have shown efficacy in reducing anxiety and depression (Beard & Amir, 2008; Holmes, Lang, & Shah, 2009; Mathews et al., 2007). We have conducted studies using similar procedures that focus on hostile interpretation biases and found our program to successfully reduce anger and hostility.