The behavior of investigators during crime scene investigation plays a crucial role in the identification of the criminal. Milwaukee Police Department on July 22, 1991, found a man near an apartment building on North Street 25. A handcuff dangled from the wrist of the man who claimed to receive threats from inside. The claims of the victim encouraged police investigation. FBI headquarters then passed orders for Jaffrey Dahmer’s arrest after receiving the report. Crime scene investigation revealed many pieces of evidence that portrayed Dahmer as a brutal serial killer. FBI’s role was to provide forensic and investigative support. After the revelation of strange facts, FBI allowed taking investigations further. The Bureau under federal kidnapping stature permitted laboratory and identification services and gave authorities to the local police at Milwaukee. Investigators tracked the killer’s trail throughout Wisconsin to identify victims (ROBINSON, 2012).Investigations also involved behavioral analysts in studying the profile of Dahmer. Through investigations, the team managed to find remains of eleven victims killed by the offender. Tools used for torture and dismemberment were discovered in the apartment. The investigators sent the samples of the victims for forensic analysis. The evidence provided against the killer included photographic content, computer examinations, DNA profiles and other tests. DNA analysis determined Dahmer as the killer of 17 people. To resolve the case Bureau agents and analysts investigated Dahmer and revealed evidence that could link him to the murders of the victims. Investigators searched all placed where Dahmer had lived including Florida, Ohio, and Germany. After his arrest, he confessed the murders he committed. He also accepted his involvement in torture, abuse, and mutilation of the victims and corpses. Overall assessment of the crime scene investigation exhibits that the investigators adopted neutral role (Schwartz, 1992).Behavioral and environmental factorsInvestigating crime involve complex and psychologically intriguing scenarios. Proper investigation demands controlling behavioral and perceptions that could influence the case. The behavioral and environmental factors influenced the investigations as the crime scene portrayed a horrific picture. Fear and disgust are prominent factors influencing the investigation. Motivated by fear the investigators were convinced to consider Dahmer as a killer before the inquiry. Fear and prejudgment are capable of affecting the neutrality of the investigations while the crime department emphasizes on adopting neutral approach throughout the procedures. Environmental factors such as institutional pressures and social expectations provoked investigators to collect evidence that could prove the offender guilty. The existence of strange equipment and remains of the dead bodies leads to a pre-judgment about the offender. External pressures including time constraints and workload motivated officers to create preferences related to the outcomes of investigative activities. Frequent encounters with the officers with criminal events promote adverse affective reactions. Past experiences influence the emotions and human cognition. Investigative tasks often involve judging and probability related to the event. Outcome knowledge inflates perceived predictability of observed outcome causing differences in officer’s foresight and judgments (Ask & Granhag, 2005).Role of psychological profileThe psychological profile of offender influenced him to murders, but he committed the crime under full consciousness. Violent criminal behavior was visible in the psychological profile of the offender. The problem of substance abuse also portrayed the offender as a mentally disturbed individual. The psychological profile influenced the subsequent court proceedings and the investigations. Due to the exploration of the body parts and other strange things the investigators were convinced to recognize the Dahmer as an insane. The role of offender’s psychological profile is also apparent as the investigation involves behavioral and psychological analysts. The psychological profile of offender also affected the prosecutions as the court was unable to decide until receiving confirmation that crimes occurred under conscious mind. Psychopathic tendencies of the offender influenced the legal proceedings. The law enforcement officials were least interested in assessing the mental state and the psychological complexities of the offender (Nichols, 2006).Impact of biases and assumptionsBiases and assumptions remained visible in Dahmer’s case influencing prosecutor’s assessment. The decision of the court to release offender irrespective of his sexual problems and dependence on substance abuse exhibits biases in judgments. Though the judge was unaware of Dahmer’s engagement in killings of five men he did he ignored the probability of continuing crimes. The prosecutions did not carry investigations to find Dahmer’s involvement in suspicious activities. Release provided an opportunity to the offender to continue his killings. The facts indicate that the investigations at the same time could uncover the same evidence and prevent Dahmer from committing further killings (ROBINSON, 2012).Cultural-based behavioral patternsInvestigators perception of whiteness exhibits cultural-based behavioral patterns. The perception may or may not confirm the hypothesis of a homicide investigation. Delay in investigations depicts tendency of investigators and the prosecutors to preserve initial belief (Webber, 2007). Cultural-biased patterns become more visible when Dahmer managed to get bail on $10,000 on assaulting a child for immoral purposes in 1988. The release may have encouraged him towards further crimes. The authorities identified issues with the offender still allowed him a free life. He was involved in abusive acts before his revelations of seventeen killings. The facts claim that he masturbated in front of the children at Wisconsin State Fair. A black man also claimed that Dahmer drugged and robbed him, but police department neglected him. The prosecution accepted the claim’s of Dahmer’s attorney that he was sick irrespective of the probability of re-offense. Cultural-based patterns influenced the prosecution’s judgment as Dahmer was released shortly on a crime of assaulting a child (ROBINSON, 2012).ReferencesAsk, K., & Granhag, P. A. (2005). Motivational sources of confirmation bias in criminal investigations: The need for cognitive closure. Journal of Investigative Psychology and Offender Profiling, 2, 43-63.Nichols, D. S. (2006). Tell me a story: MMPI responses and personal biography in the case of a serial killer. Journal of Personality Assessment, 86, 242-262.ROBINSON, L. A. (2012). Dahmer and the Legal System. Retrieved Feb 13, 2018, from http://www.personal.psu.edu/bfr3/blogs/asp/2012/03/dahmer-and-the-legal-system.htmlSchwartz, A. E. (1992). The man who could not kill enough: The secret murders of Milwaukee’s Jeffrey Dahmer. New York:: Birch Lane Press.Webber, C. (2007). Revaluating relative deprivation theory. Theoretical Criminology, Vol 11, No 1.