Recent research by Qiang, Ma, and Li challenges traditional beliefs about avoiding errors in education by demonstrating that deliberately making errors can significantly enhance learning outcomes. The researchers conducted three experiments with non-psychology undergraduate students (aged 18-25) from Northwest Normal University in China. Participants were required to study definitions of psychological concepts and perform recall tests. They were randomly assigned to one of three learning conditions:
- Deliberate errors: Students intentionally generated plausible errors while studying psychological concepts and then corrected them (e.g., “Memory is the physiological [psychological] process of accumulating …”).
- Retrieval practice: Students studied material and then attempted to recall it from memory.
- Restudy: Students repeatedly read, copied the material and underlined key information.
Experiment 1 assessed immediate recall of psychological concept definitions with 161 participants. Experiment 2 examined delayed testing (one week later) using the same learning approaches with 162 participants. Experiment 3 combined both immediate and delayed testing and enhanced the retrieval practice condition by adding feedback and an additional learning opportunity, involving 149 participants.
The results consistently showed that deliberate errors and retrieval practice yielded similar results in immediate testing, both outperforming restudy. However, in delayed testing, deliberate errors significantly outperformed retrieval practice with and without feedback, and both strategies outperformed restudy.
The findings suggest that deliberate errors are particularly effective for long-term retention. When students deliberately generate plausible errors before correction, they engage in deeper cognitive processing, form unique memory trace, and enhance the discriminability of knowledge. Despite these clear benefits, students consistently underestimated the effectiveness of deliberate errors, suggesting a metacognitive illusion that teachers need to address.
Source: Qiang, X., Ma, X., & Li, T. (2025). Learning from errors: Deliberate errors enhance learning. Contemporary Educational Psychology, 82, 102379. https://doi.org/10.1016/j.cedpsych.2025.102379