A study analyzed the effects of using a personal development plan (PDP) on learning and development through a quantitative survey of over 2,000 participants. The results showed that while PDP users engaged in more past learning activities, it did not lead them to plan more future activities or rate their job competencies higher than non-users. The study had limitations such as relying on self-assessment and a lack of qualitative data. Improving supervisor feedback and using multiple raters in future research was recommended.