<br /><i><b>Pollyanna</b></i>&nbsp;is a best-selling 1913 novel by&nbsp;Eleanor H. Porter&nbsp;that is now considered a classic of&nbsp;children&#39;s literature, with the title character&#39;s name becoming a popular term for someone with the same very optimistic outlook: a subconscious bias towards the positive is often described as the&nbsp;Pollyanna principle.