HOW OFTEN IS EMPLOYEE ANGER AN INSIDER RISK II? DETECTING AND MEASURING NEGATIVE SENTIMENT VERSUS INSIDER RISK IN DIGITAL COMMUNICATIONS-COMPARISON BETWEEN HUMAN RATERS AND PSYCHOLINGUISTIC SOFTWARE

This research uses two recently introduced observer rating scales, (Shaw et al., 2013) for the identification and measurement of negative sentiment (the Scale for Negativity in Text or SNIT) and insider risk (Scale of Indicators of Risk in Digital Communication or SIRDC) in communications to test the performance of psycholinguistic software designed to detect indicators of these risk factors. The psycholinguistic software program, WarmTouch (WT), previously used for investigations, appeared to be an effective means for locating communications scored High or Medium in negative sentiment by the SNIT or High in insider risk by the SIRDC within a randomly selected sample from the Enron archive. WT proved less effective in locating emails Low in negative sentiment on the SNIT and Low in insider risk on the SIRDC. However, WT performed extremely well in identifying communications from actual insiders randomly selected from case files and inserted in this email sample. In addition, it appeared that WT’s measure of perceived Victimization was a significant supplement to using negative sentiment alone, when it came to searching for actual insiders. Previous findings ( Shaw et al., 2013) indicate that this relative weakness in identifying low levels of negative sentiment may not impair WT’s usefulness for identifying communications containing