Ok

I've got a form that shows whether an article belongs to a book or a journal. However, when you move records the option remains on the previously selected value.

Does anyone know how you could get the option to change automatically as you move through the records depending on whether "book" or "journal" had been entered?

Ta

Call your checking code on the Form_Current Event.

It would appear from your description that your option group is not bound to a field in the table. That would be why it stays the same when you move from record to record.