“…Nevertheless, some studies have reported statistical relationships between blood types and other aspects of human personality. For example, several studies have found unusually high rates of manic depression among persons with the O blood type (Mendlewicz, Massart-Guiot, Wilmotte, & Fleiss, 1974;Parker, Theilie, & Spielberger, 1961;Rinieris, Stefanis, Lykouras, & Varsou, 1979;Shapiro, Rafaelsen, Ryder, Svejgaard, & Sorensen, 1977) with one failure to replicate (Masters, 1967). Also, studies have reported unusually high rates of cigarette smoking among persons with Arch Sex Behav (2008) 37:145-149 147 both B and AB blood types (Cohen & Thomas, 1962), a propensity for persons with A blood type to score high on a personality measure of ''tender-mindedness'' (Cattell, Boutourline, Young, & Hundleby, 1964), and high rates of suicide among individuals with O blood type (Voracek, 2004).…”