“…According to Merkel (2016), "Crossword puzzles have been researched in connection with many facets of cognitive development" such as "analysis of the cognitive skills of crossword enthusiasts (Underwood, Deihim, & Batt, 1944), investigation of how the structure of words in the mental lexicon helps solve word fragments in which letters are either clustered or dispersed (Goldblum & Frost, 1988), the link between types of crossword puzzle clues and how the mind works (Nickerson, 2011), and crossword puzzles and lexical memory (Nickerson, 1977)" (as cited in Merkel, 2016, p. 902). In spite of efforts to value the efficacy of crossword puzzles in ELL education, Merkel (2016) concludes that there is no research on the efficacy of crossword puzzles for ELLs. The usage of a crossword puzzle for reviewing does not show any significant improvement in college students' Sociology course exam; furthermore, one of the two groups show a decrease in exam scores with use of crossword puzzles (Davis, Shepherd, & Zwiefelhofer, 2009).…”