Benefits
ITC produces high-quality, in-depth data across multiple countries. Sharing the surveys, technical reports, and analytic code can support colleagues in using and analysing the data. I have personally found that pre-registration of analysis plans is particularly beneficial when working with multiple co-authors (many ITC papers have 10+ authors) because, not only is it best practice, it also sets expectations at the start of the project and so can help mitigate challenges later. This is particularly helpful when supervising students or supporting early career researchers who are analysing ITC for the first time, as ITC is a comprehensive and complex survey so knowing specifically what outcomes and predictors will be included and how the data will be analysed up-front reduces challenges later down the line. Additional benefits of pre-registration include having written half of the paper (i.e., introduction, methods) before obtaining the data, journals look favourably upon it, and it gives you an additional output on your CV (particularly helpful for students and early-career researchers!).