Unveiling the efficacy of the feedback concealed information test in collaborative crime detection.

Collaborative crime poses severe social hazards. In collaborative crime scenarios, previous studies have indicated that perpetrators' collaborative encoding can impair the detection efficiency of P300-based complex trial protocols due to the collaborative encoding deficit. The feedback concealed information test (fCIT), a unique variation of the concealed information test, provides participants with feedback on how well they conceal information from memory. The fCIT, which has proven to be highly efficient, detects concealed information using recognition P300 along with feedback-related event-related potentials, and reflects the subject's motivation to conceal. However, no studies have examined the fCIT's effectiveness in identifying collaborative criminals. We propose that the fCIT's efficiency persists in cases of collaborative crime and test this hypothesis using a sample of 48 participants. The participants in the collaborative groups were instructed to have hushed conversations about theft to simulate the collaborative crime process. Subsequently, they completed the fCIT. The findings indicate a significant decline in recognition P300's detection efficiency when participants committed crimes collaboratively. Nevertheless, the detection efficiency of feedback P300 and feedback-related negativity remained high. This study's outcomes illustrate the capacity of the fCIT to detect perpetrators involved in collaborative crime.

Cumulative childhood trauma and mobile phone addiction among chinese college students: role of self-esteem and self-concept clarity as serial mediators.

Mobile phones have become an indispensable part of people's lives, and their use has been exacerbated by the COVID-19 pandemic. However, mobile phone addiction has also become a growing concern. This study investigates how cumulative childhood trauma relates to mobile phone addiction among Chinese college students, and the subsequent role of self-esteem and self-concept clarity. A sample of Chinese college students (N = 620) were investigated using the Childhood Trauma Questionnaire-Short Form, the Mobile Phone Addiction Tendency Scale, the Rosenberg Self-Esteem Scale, and the Self-Concept Clarity Scale. The results showed that: (1) cumulative childhood trauma significantly and positively predicted mobile phone addiction among college students; (2) self-esteem mediated the association between cumulative childhood trauma and mobile phone addiction; and (3) self-esteem and self-concept clarity had a sequential mediating effect on the relationship between cumulative childhood trauma and mobile phone addiction. Thus, this study is a reminder to focus on the combined role of multiple adverse experiences and self-system factors in the intervention of mobile phone addiction.