 These lists have similar attributes, as they all aim to divide words into levels which are prioritized and introduced to children according to frequency of appearance in beginning readers' texts.Although many of the lists have overlapping content, the order of frequency of sight words varies and can be disputed, as they depend on contexts such as geographical location, empirical data, samples used, and year of publication.Research

Research shows that the use of sight words does not sufficiently develop phonological awareness.