Three Theories of Criminal Justice and How They Work Together to Solve Crime

Fingerprint Officers/Analyst

A fingerprint officer must prove how the fingerprints on the aquarium, door handle, metal rod, chocolate bar wrapper, and a note can all be connected to the same person (the suspect). The fingerprint officer can lift the fingerprints using different methods. With the areas that have the fingerprint on them, the fingerprinting officer would most likely use a fine powder (biochromatic powder) to reveal any fingerprints so that the fingerprint can be lifted and placed in an airtight container and then get shipped off to get analyzed.

Track Tread Analysis

A track tread analysis (TTA) can determine what brand and model made the mark of the blue shoe prints. A TTA can then select the person’s size, leading to a determination of the height. All of this information is crucial to an investigation because having evidence like what is here can narrow suspects down, making it easier to suspect someone of a crime.

No two shoes will have the same print. For example, one shoe could have more tread than a different one, one shoe could have a different pattern, and one could have more or less print. This is due to how much it has been worn. These can be used to tell how old a shoe is. All this information can be crucial to finding the person who committed the crime. If the crime committed was in a field that had dirt, soil, or a type of surface that is similar, then the TTA can try and figure out the weight of the person, making it easier to convict someone of a crime.,

DNA Analysis 

A DNA Analysis can help in a criminal investigation by analyzing the chocolate bar wrapper. The DNA Analysis can find the DNA of any person, mainly because no two people have the same DNA. A DNA Analysis will be helpful in every investigation because there will be DNA left behind from everyone everywhere they go, this being able to detect everyone who was at the crime site.,

How the three all work together

The three specialties will all work together by combining the knowledge of everyone involved in the investigation, making it easier for the guilty person to be found and put in jail. With all the modern-day technology, it is the most challenging time to commit a crime and get away with it. With that being said, it will just be even harder to commit any crimes in the future. Convicting the right person is a crucial part of an investigation because an innocent person has been put into jail for no reason if the wrong person is convicted.

In this case, all the three disciplines could work together by the original fingerprint analysis getting the fingerprints to try and find out who is guilty there. The fingerprint analysis can then narrow down the suspect to 1 person. That is not all, in any case. To make sure that the right person is convicted, the TTA can find the shoe that the purp was wearing, thus making it easy and nearly 100 percent confirm the criminal. The TTA can find the person by going into the shoe shops database and finding what brand of shoes the accused victim.

Narrowing the accused person down will finally bring to the table DNA analysis. This will make the police and conviction 100 percent sure of who the person is. The DNA analysis will collect DNA from the crime scene allowing DNA specialists to discover who the person is. After all of this work, the correct person can be convicted with 100 percent certainty that the convicts and police have the correct person, not an innocent person who shouldn’t be in prison.

Strengths of discipline

The most assertive discipline would be DNA analysis. This is based on the fact that finding out the criminal’s DNA will narrow it down to 1 or 2 people, making it very easy to convict the right person. The second most assertive discipline is fingerprint analysis. This is due to the fact of how getting a fingerprint is very crucial to finding the correct person. No two people have the same fingerprints, which should make it the most vital discipline.

It is not the strongest because there can be more errors in reading the fingerprints rather than the DNA. Many more ways can make a fingerprint incorrect, but many more minor for DNA. The weakest discipline is the TTA. The TTA does not have a critical role. If there is a DNA analysis and a fingerprint analysis at the crime scene, then the TTA would only be in the investigation to check once the fingerprint analysis and DNA analysis have a lead on who the criminal could be.