Pollyanna is a best-selling 1913 novel by Eleanor H. Porter that is now considered a classic of children's literature, with the title character's name becoming a popular term for someone with the same very optimistic outlook. Also, the subconscious bias towards the positive is often described as the Pollyanna principle. The Pollyanna principle is the tendency for people to remember pleasant items more accurately than unpleasant ones. Research indicates that, at the subconscious level, the mind has a tendency to focus on the optimistic while, at the conscious level, it has a tendency to focus on the negative. This subconscious bias towards the positive is often described as the Pollyanna principle.