The word rationale appeared in the second half of the 17th century, just in time for the Age of Reason. It is based on the Latin ratio , which means "reason," and rationalis , which means "endowed with reason." At first, rationale meant "an explanation of controlling principles" ("a rationale of religious practices," for example), but soon it began to refer to the underlying reason for something (as in "the rationale for her behavior"). The latter meaning is now the most common use of the term. The English word ratio can also mean "underlying reason" (in fact, it had this meaning before rationale did), but in current use, that word more often refers to the relationship (in number, quantity, or degree) between things.
More prominent was dispute over the latter stressor requirement (A2). Friedman et al. (2011) emphasized that the presence of a subjective response did not predict that an individual who would go on to develop PTSD. Although these subjective responses are characteristic trauma reactions, limiting the range of psychological responses may discount subpopulations, most notably survivors of sexual and partner violence, military and first responders (Friedman et al., 2011). The predominant post-traumatic reactions of interpersonal violence survivors include anger, guilt and shame; the military and first responders often report not having an immediate emotional reaction to traumatic exposure as a result of their training. In a sample of adult sexual assault survivors, over 75% endorsed shame as a leading psychological response (Vidal & Petrak, 2007). Over 20% of survivors were misdiagnosed due to not meeting the A2 criteria (Creamer, McFarlane, & Burgess, 2005).