The current study examined the relations among key variables that underlie reading comprehension of expository science texts in a diverse population of adult native English readers. Using Mechanical Turk to sample a range of adult readers, the study also examined the effect of text presentation on readers' comprehension and knowledge structure…

Although the recent identification of the five critical components of early literacy has been a catalyst for modifications to the content of materials used to provide reading instruction and the tools used to examine student's acquisition of early literacy skills, these skills have not received equal attention from test developers and publishers.…