The Let's Think About... booklet was published by Scarfolk Council Schools & Child Welfare Services department in 1971. It was designed for use in the classroom and encouraged children between the ages of five and nine to focus on a series of highly traumatic images and events.
Parents and teachers assumed that the booklet was based on psychological research but it had no scientific basis whatsoever. The booklet's medically untrained author was one of the dinner ladies from the council canteen before she was fired for attempting to slip strychnine into bowls of blancmange.
Despite the scandal, the booklet remained on the school curriculum for many years and the author was invited by the council to pen an updated edition from her prison cell in 1979.