“…However, a number of studies have reported that PM and RM are not strongly associated in adults and healthy elderly (Brandimonte & Passolunghi, 1994; Driscoll, McDaniel, & Guynn, 2005; G. O. Einstein & M. A. McDaniel, 1990; Huppert & Beardsall, 1993; Kidder, et al, 1997; Kvavilashvili, 1987; Maylor, 1990; McDaniel & Einstein, 1993; Salthouse, Berish, & Siedlech, 2004), typically-developing children (Kvavilashvili, Messer, & Ebdon, 2001), or most recently, children with sickle cell disease (McCauley & Pedroza, 2010). RM and PM appear to be closely related quite early in development, but tend to dissociate rapidly; there is evidence that by the age of five years, these two memory domains are distinct (Guajardo & Best, 2000; Ruther & Best, 1993).…”