@biorxivpreprint in this study, we explore #handedness -related difference in #CorpusCallosum morphology in #HCP data. As follow-up of a recent ("negative") meta-analysis we systematically explore some remaining questions such as the effect of various definitions of handedness. In short: handedness differences are likely negligible. Thus, the frequent notion that mixed- or left-handers have stronger interhemispheric connectivity, might be just one of these 1970/80s #HandednessMyths .