The psychological effects of repeated time loops on characters can vary depending on how each individual copes with the situation. Some common effects might include feelings of confusion, frustration, anxiety, and even a sense of helplessness as they struggle to break free from the loop. Characters may also experience a breakdown in their sense of reality and identity, leading to existential crises and questioning the nature of their existence. Additionally, the repetition of events can cause emotional distress and trauma, as characters may be forced to relive painful or traumatic experiences over and over again.