Lexical decision is an experimental task where participants classify visual stimuli as words or non-words as quickly and accurately as possible. The lexical decision task was first introduced in Meyer and Schvaneveldt (1971), and since then the paradigm has been manipulated in thousands of experiments, providing researchers with insight about visual word recognition. In the example you are about to participate in, the goal is to demonstrate differences in the speed of classifying words and non-words.