I found a way to do this if you own the ambitions expansion pack. At some times you will get opportunities to do some job away from the home lot, giving you the new medical diary. Being a bookwurm enables you to read the book - after completing the job - fast enough to be able to increase the stat before going to work again the same day. However, the time you are reading the book, drops the work performance a little (because you're not at work), so that your chances of getting promoted are decreased a little, but when you go back to the rabbithole, your research stat may be outstanding.