Sex differences in the missing-letter effect: A question of reading or visual–spatial skills?

When readers must search for a target letter while reading a continuous text, they are more likely to miss targets in frequent function words than in less frequent content words. This missing-letter effect has been found across many languages, methodologies, and types of reading materials. Despite the ubiquity of the missing-letter effect, sex differences have been reported, but their pattern is conflicting and no clear interpretation has been …