I thought/am thinking about this too. An organized vs disorganized killer, and how this is related to their experience killing. But perhaps he just got careless, sloppy, smug...? Foxfire, what are your thoughts on this? (Or anyone else, lol.)
Margarita25, without knowing certain details of the crime scene/s and disposal site, it would be difficult to make specific conclusions at this time. Some serial killers are neither organized or disorganized, but are sometimes classified as mixed offenders. In JDW's prior known attempted abduction, he had handcuffs in his glove compartment which would be one indication of an organized offender.. JDW likely kept heavy duty nylon Zip or cable ties in his truck which do not draw suspicion, but are effective restraints.
Many serial predators get over confident due to their abilities to evade detection by law enforcement over decades. This invincible perception causes them to violate their rules of prey and is usually when they get caught.
http://www.expertlaw.com/library/investigators/serial_killers.html
Home > Legal Articles > Legal Practice > Serial Killers - A Homicide Detective's Take
Serial Killers - A Homicide Detective's Take - By Nelson Andreu
Credentials and Interest
Common Knowledge
Genesis of a Serial Killer
Victim Selection
Victim Objectification
Denouement
Case Histories