Akira Sakamoto

TL;DR: The evidence strongly suggests that exposure to violent video games is a causal risk factor for increased aggressive behavior, aggressive cognition, and aggressive affect and for decreased empathy and prosocial behavior.

TL;DR: Similar results across different methodologies, ages, and cultures provide robust evidence of a prosocial game content effect, and they provide support for the General Learning Model.

TL;DR: These longitudinal results confirm earlier experimental and cross-sectional studies that had suggested that playing violent video games is a significant risk factor for later physically aggressive behavior and that this violent video game effect on youth generalizes across very different cultures.

TL;DR: Latent-growth-curve modeling for the 2-year period revealed that change in video-game use significantly affected change in helping, and that this relationship was mediated by change in empathy.

TL;DR: In this paper, the authors tested the relation between culture and cyberbullying using a short-term longitudinal research design and found higher levels of cyber-bullying change for the U.S. sample compared with the Japanese sample.