Students who choose to join the study may be more motivated, creating self-selection bias.
主动选择参加研究的学生可能更有动力,从而造成自我选择偏差。
Because participation was voluntary and advertised on social media, the survey results likely suffer from self-selection bias, overstating the level of support among the general population.
由于调查是自愿参加且通过社交媒体宣传,结果很可能存在自我选择偏差,导致对总体支持度的估计被夸大。