Through the course of their career the Forensic Psychologist, particularly those involved with criminal investigations, will cross the paths of several other forensic investigators.  A working knowledge of each of these disciplines is essential to the professional investigator.  Below I have defined a number of the key specialists involved in criminal investigations.
 

• Forensic Anthropologists - The forensic anthropologist examines the victims bones to determine a number of key facts.  Information such as gender, age, looks, previous trauma, and disease can all be found.  The forensic anthropologist is often of key relevance to the identification of remains.  They use a number of means, including molecular DNA analysis.
• Forensic Artist - the forensic artist provides an elaborate sketch of the offender.  This process is undertaken via the information from an eyewitness.  Many investigators now use computer programs to develop offender renditions.
• Ballistics Experts - ballistic experts focus on the functioning of firearms.  Via microscopic analysis they can match up bullets with a particular weapon.  They also provide key information about the projectiles path.
• Forensic Chemists - the forensic chemist studies the molecular aspects of the crime scene.  They can match fibers, paint, and dyes to particular objects.  They will identify relevant chemicals and particles.
• Dactyloscopy - this is the scientific analysis of fingerprints.  Fingerprint experts have been involved with law enforcement for almost a hundred years.  Recent advances in dactyloscopy have continued to make fingerprint analysis of key importance (i.e., new methods pull fingerprints off underwater surfaces, skin, etc.).
• Forensic Dentists/Odontologists - these experts serve a identification function.  Via the analysis of a corpses teeth and previous dental records they can make a positive identification.  They also will analyze bite patterns so that they can identify who was eating a particular meal or even who bit somebody.
• Forensic Entomologists - the entomologist studies insects.  A number of pieces of key information can be discovered from this analysis.  The rate of body decay via insects can directly correlate to time of death.  The presence of certain insects can identify previous dump sites, etc.
• Forensic Geologists - the forensic geologist can determine where a person or object has been by analyzing soil samples.  Soil can be found on a pair of shoes, tire treads, or a body.  They can be matched up with common soil types to predict quite specifically where the object/person has been.
• Forensic Linguists - the forensic linguist analyses either the spoken or written word.  They can identify whether a message was presented by the same individual, what the individuals underlying intent is, the individuals educational and cultural background, as well as the presence of pathology.
• Forensic Pathologist - the forensic pathologist analyzes the remains of a body.  They attempt to determine the cause and time of death via autopsy.
• Forensic Photographer - the crime scene photographer attempts to record every component of the crime scene via photograph.  They depict the scene from multiple angles, using multi-functional cameras, and through the consistent evaluation of size and distance.
• Forensic Sculptors - like the forensic artist, the sculptor attempts to create an image of either an offender or a victim.  The sculptor's goal is to create a three dimensional version of the image.
• Forensic Serologist - the serologist studies blood and other bodily fluids for identification purposes.  The serologist is often involved in DNA fingerprinting (the identification of an individual based on body cells).