Size does count: a reply to Kitazawa and Kansaku

Abstract

Sir, In their Letter to the Editor, Kitazawa and Kansaku responded to our meta-analysis on sex differences in language lateralization measured with functional imaging techniques (Sommer et al ., 2004). Though Kitazawa and Kansaku gave an interesting interpretation of the data, we do not agree with the alternative calculation of the effect sizes of two studies they suggested. Kitazawa and Kansaku hypothesized that sex differences in language lateralization may be present only when subjects listen to stories, since two studies (Kansaku et al ., 2000; Philips et al …