Discriminating the lie of suspect is one of the important tasks in criminal investigations. Lie are known to induce cognitive loads due to additional cognitive task such as creating a false reality ord monitoring their statements. The increase of the cognitive load during lying has been observed in studies using neurophysiological measures (e.g., EEG and fMRI), but also observed in keyboard strokes (keyboard input patterns) during writing their statement. Lie detection using keyboard strokes has the advantage of having fewer test restrictions and enabling qualitative analysis of statements, but it is a method that has not been attempted in Korea. This study investigated whether keyboard stroke measures were changed during lying in Korean population. Participants (N=38) typed their diary (baseline) and contents of the video they watched (free recall task). The witness group (n=22) provided a instruction to honestly write what they witnessed, and the lie group (n=16) provided a instruction to write the content as if the suspect had never committed a crime. When comparing the keystroke measures of baseline and free recall, any significant change was not observed in the witness group whereas number of keystrokes per second, the first input time, and the average pause time were significantly changed in the lie group. Specifically, the number of keystrokes per second and the first input time slowed down, and the pause time increased during lying. This result shows that keyboard type behaviors were affected with the increase of cognitive burden when writing deceptive statements, suggesting that keyboard stroke could be an effective indexes for detecting lying.
The purpose of this study was to investigate the effect and the relationship between depression and delinquency among adolescence. Korea Child and Youth Panel Study(KCYPS) data conducted from 2010 to 2016 by National Youth Policy Institute(NYPI) were used for this study. Data from the year 2012 and 2015 were included in the analysis, which consisted total of 1,960 individuals including 1,000 male and 960 female participants. Participants were to answer 10 questions for their subjective depression, and 14 questions for their past delinquent behavior. Results from the year of 2012 and 2015 were examined, as well as the time-varying changes of depression and delinquent behavior were analyzed. As a result, measured depression level was significantly higher for female adolescents, and delinquency score was higher for male adolescents for both of the period. Depression significantly predicted delinquency, but only for the concurrent period. Past depressive feeling was not able to predict future delinquent behavior. Changes in depression predicted changes in delinquent behavior and the future delinquent behavior.
As stalking rises as a serious public matter, we aimed to examine the factors influencing the judgment of stalking. We investigated if there was any difference in the judgment of stalking by stalker-victim relationships(i.e., strangers, ex-partners, and ex-colleagues), and by people’s gender and age. We also explored if internalized shame, known to be related to interpersonal problems and dating violence, affected the judgment of stalking. As a result, the offender responsibility was evaluated higher in the stalking occurred between strangers than ex-colleagues, and more severe punishment was evaluated for the stalking occurred between strangers than ex-colleagues. The victim was held less responsible for the stalking occurred between ex-partners than ex-colleagues, and for the stalking occurred between strangers than ex-partners, and the victim blame was evaluated less for the stalking occurred between strangers and ex-partners than ex-colleagues. The mediation effect of internalized shame on the relation between age and stalking judgment was significant. The less the people’s age, the higher the internalized shame, and the more likely to hold the victim responsible and to blame the victim for the stalking. The results showed that the judgment of stalking differed by stalker-victim relationships. Additionally, the mediation effect of internalized shame between age and judgment of victim responsibility and victim blame was significant.