The field of study you're looking for it's criminology. (Star wars reference)
<span>It is due to decay theory.information is less available since memory strength wears away.It mostly affects the older memories( short term memories) since it is more resistant to shocks and physical affects of brain. More over older memories are stronger than recent memories. Many of them will eventually think of old memories often to make them cherish.</span>
The answer is D: they have a similar range of personality characteristics as do those in general population without down syndrome
