”In her 2006 book “The Female Brain,” for example, Louann Brizendine reported that women average 20,000 words a day against just 7,000 for men. That came as no surprise to many in the media; as one TV reporter put it: “Here’s a news flash. Women talk more than men. Duh.” But Liberman tracked Brizendine’s figures to an unsourced claim in a self-help book and noted that the empirical research shows both sexes using about the same number of words in a day. Duh! yourself. And when columnists including George Will and Stanley Fish asserted that President Obama’s frequent use of “I” and “me” betrayed his arrogance and self-absorption, Liberman did the counts and showed that Obama actually used those pronouns far less often in speeches and press conferences than did any of his recent predecessors.