Example of Criminal Psychology

As part of legal psychology there is the criminal psychology, which consists of determining through analysis, observations and in-depth study of both the scene of the crime as well as the suspect, and all persons involved in the crime, both the victim and the witnesses, etc. This in order to help the forensic investigation and to determine the causes that will lead to the suspect to carry out the crime or, on the contrary, the reasons why that person would be unable to carry out those Actions.
Once the psychological investigation is finished, the expert could be required by a judge to give his professional opinion on the case, and where appropriate determine the circumstances that led to the crime whether the action was carried out by a sane person or by someone deranged.
In order to carry out his work, the forensic psychologist needs to have studied psychology and the branches of it that are used most in criminology, such as social, clinical, child psychology or other branches of psychology and even psychiatry, which deals with mental pathologies. You must keep up to date and your criteria be impartial, (trying not to involve your emotions in the study.) carry out your work you can use different methods, as long as they respect your professional ethics and the human dignity of the studied. These methods can be:

Psychometric tests, neurosis, IQ, study the clinical history and personality of the parties (the offended and the offender) the environment in which the events took place and in which the parties developed.
Criminal psychology studies the scene of a crime in search of reference patterns to be able to help in the capture of criminals if they are missing, or the victim of a kidnapping or disappearance and the probable places where they would find it according to the mentality of the kidnapper or the victim.
The criminal psychology You can also do various tests or projections that would help solve the case whether the aggressor or the victim identifies with what is shown or identifies the aggressor. There are cases in which drugs are used to enter, or calm the person and be able to study them, there are cases where hypnotherapy or dangerous drugs such as thiopentate are used. sodium, which by depressing the higher cortical functions prevents the will at some level, and for this reason it was believed that it could be used as part of the interrogation, but although in some people it is effective in others it does not have the desired effect, either because the person has been previously trained not to tell the truth or because they believe their own lies. Then he investigates the person through his relatives and acquaintances, also studying his way of living, dressing, walking, gesturing, expressing himself, writing and her interests. Since many of these things speak of the type of person and a possible disorder or circumstance.
From the branches of the criminal psychology the study of personality through non-verbal communication emerges. From non-verbal communication are derived:
Graphology; in it the personality is studied through writing.
Kinesic; In it, personality is studied through gestures, micro gestures and body language, including clothing and accessories.
Phrenology; In it, personality was studied through cranial shape and facial measurements, but many of its criteria have been rejected by discriminators or racists, so many consider it in disuse and only part of it is used for psychology real. Already many diseases have facial changes as a characteristic.
Proxemic; In it, the personality is studied through the approach of the person with others, since each person has a personal space and the use that he makes with it will depend a lot on his personality.
Chronic; in it the personality is studied through the use and the times that the person takes to speak.