With a grandson who is about two years old. Mrs Green wants to drop sociology and take up psychology instead.
Professor Crayton is having none of that as the term has started and it is too late to switch courses.
Mrs Green has read books on child rearing and taken up with new fangled psychological ideas. No dummy for the baby is the latest school of thought.
Her daughter Susan is not enamoured with her mother's views on raising a child. Especially when it comes to chastising a difficult child.
Maybe Mrs Green will learn a lesson that there is still some mileage in the tried and trusted ways.
This is the first episode I have caught and even for its time, it really is not even mildly funny. Just too cosy and formularised.