Footprint Evidence Is High Valuable

Footprint evidence is high valuable when it comes to solving crimes (Penrod, 2003). This kind of evidence can tell not only what kind of shoe a person was wearing, but also how hard the person may have stepped on the ground, where the person had been previously, and other issues such as whether he or she might have been carrying something heavy (Penrod, 2003). This kind of evidence should be preserved, and this means protecting it from anyone else walking around as well as animals, rain, snow, and anything else which might cause it to change. In addition, impression of footprint evidence are usually cast and kept (Penrod, 2003). This is done through mixing up a medium used to make detailed impressions and pouring it carefully into the footprint. When it dries, it will be removed and provide the investigators with a plaster cast of the footprint, which can then be used for comparison later (Penrod, 2003).

Another concern for those who investigate crimes is psychoactive drugs and what happens to a person who is taking them. Psychoactive drugs alter a person's nervous system and affect consciousness and perception (Penrod, 2003). People may become much more alert and euphoric, but this often causes them to make poor judgment calls because they think that they are able to do much more than they actually can. In addition, they may not see anything wrong with actions that would otherwise be considered dangerous (Penrod, 2003).