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Voice Stress Analysis
Voice stress analysis (VSA) and computer voice stress analysis (CVSA) are collectively a pseudoscience, pseudoscientific technology that aims to infer deception from stress measured in the voice. The CVSA records the human voice using a microphone, and the technology is based on the tenet that the non-verbal, low-frequency content of the voice conveys information about the physiological and psychological state of the speaker. Typically utilized in investigative settings, the technology aims to differentiate between stressed and non-stressed outputs in response to stimuli (e.g., questions posed), with high stress seen as an indication of deception. Scientific findings The use of voice stress analysis (VSA) for the detection of deception is controversial. Discussions about the application of VSA have focused on whether this technology can indeed reliably detect stress, and, if so, whether deception can be inferred from this stress. Critics have argued that—even if stress could relia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudoscience
Pseudoscience consists of statements, beliefs, or practices that claim to be both scientific and factual but are incompatible with the scientific method. Pseudoscience is often characterized by contradictory, exaggerated or falsifiability, unfalsifiable claims; reliance on confirmation bias rather than rigorous attempts at refutation; lack of openness to Peer review, evaluation by other experts; absence of systematic practices when developing Hypothesis, hypotheses; and continued adherence long after the pseudoscientific hypotheses have been experimentally discredited. The demarcation problem, demarcation between science and pseudoscience has scientific, philosophical, and political implications. Philosophers debate the nature of science and the general criteria for drawing the line between scientific theory, scientific theories and pseudoscientific beliefs, but there is general agreement on examples such as ancient astronauts, climate change denial, dowsing, evolution denial, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Department Of Justice
The United States Department of Justice (DOJ), also known as the Justice Department, is a federal executive department of the United States government tasked with the enforcement of federal law and administration of justice in the United States. It is equivalent to the justice or interior ministries of other countries. The department is headed by the U.S. attorney general, who reports directly to the president of the United States and is a member of the president's Cabinet. The current attorney general is Merrick Garland, who was sworn in on March 11, 2021. The modern incarnation of the Justice Department was formed in 1870 during the Ulysses S. Grant presidency. The department comprises federal law enforcement agencies, including the Federal Bureau of Investigation, the U.S. Marshals Service, the Bureau of Alcohol, Tobacco, Firearms and Explosives, the Drug Enforcement Administration, and the Federal Bureau of Prisons. It also has eight major divisions of lawyers who rep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Murder Of Stephanie Crowe
The murder of 12-year-old Stephanie Crowe took place in her bedroom inside her home at Escondido, California, sometime between late night January 20, 1998, to early morning January 21, 1998. Stephanie's parents and grandmother found her body on the floor of her bedroom on the morning of January 21, 1998. She had been stabbed eight times. There was no sign of forced entry. Stephanie's window was found unlocked, but a screen was in place and there was no disturbance of accumulated grime and insect traces. A sliding glass door in her parents' bedroom was also unlocked. No knives were found at the scene that seemed consistent with the murder weapon, and no bloody clothing was found despite an exhaustive search. Stephanie's 14-year-old brother, Michael Crowe, was interrogated for hours by police using the Reid method without his parents’ knowledge and without legal representation. Michael denied any involvement hundreds of times during the interrogation but eventually confessed in wha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Zimmerman
George Michael Zimmerman (born October 5, 1983) is an American man who fatally shot Trayvon Martin, a 17-year-old black boy, in Sanford, Florida, on February 26, 2012. On July 13, 2013, he was acquitted of second-degree murder in '' Florida v. George Zimmerman''. After his acquittal, Zimmerman was the target of a shooting. The perpetrator was convicted of attempted murder. Background George Michael Zimmerman was born on October 5, 1983, in Manassas, Virginia. He is the third of four children, and his siblings include a brother, Robert Jr., and two sisters, Grace and Dawn. His mother, Gladys Cristina (''née'' Mesa) Zimmerman, was born in Peru. Zimmerman's maternal great-grandmother was of Afro-Peruvian descent. His father, Robert Zimmerman Sr., is an American of German descent who had a military career of 22 years, first as an Army sergeant and then 10 years at the Department of Defense. Before retiring to Florida in 2002, Zimmerman Sr. had served as a magistrate in Fai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trayvon Martin
Trayvon Benjamin Martin (February 5, 1995 – February 26, 2012) was a 17-year-old African-American from Miami Gardens, Florida, who was fatally shot in Sanford, Florida, by George Zimmerman, a 28-year-old Hispanic American. Martin had accompanied his father to visit his father's fiancée at her townhouse at The Retreat at Twin Lakes in Sanford. On the evening of February 26, Martin was walking back to the fiancée's house from a nearby convenience store. Zimmerman, a member of the community watch, saw Martin and reported him to the Sanford Police as suspicious. Several minutes later, an altercation happened and Zimmerman fatally shot Martin in the chest. Zimmerman was injured during the altercation with Martin. He said he shot Martin in self-defense and was not charged at the time. The police said there was no evidence to refute his claim of self-defense, and Florida's stand-your-ground law prohibited them from arresting or charging him. After national media focused on the inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sanford, Florida
Sanford is a city in the central region of the U.S. state of Florida and the county seat of Seminole County. As of the 2020 census, its population was 61,051. Known as the "Historic Waterfront Gateway City", Sanford sits on the southern shore of Lake Monroe at the head of navigation on the St. Johns River. Native Americans first settled the area thousands of years before the city was formed. The Seminoles arrived in the area in the 18th century. During the Second Seminole War in 1836, the United States Army established Camp Monroe and built a road now known as Mellonville Avenue. Sanford is about northeast of Orlando. Sanford is home to Seminole State College of Florida and the Central Florida Zoo and Botanical Gardens. Its downtown attracts tourists with shops, restaurants, a marina, and a lakefront walking trail. The Orlando Sanford International Airport, in the heart of the town, functions as the secondary commercial airport for international and domestic carriers in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emotional Prosody
Emotional prosody or affective prosody is the various non-verbal aspects of language that allow people to convey or understand emotion. It includes an individual's tone of voice in speech that is conveyed through changes in pitch, loudness, timbre, speech rate, and pauses. It can be isolated from semantic information, and interacts with verbal content (e.g. sarcasm). Emotional prosody in speech is perceived or decoded slightly worse than facial expressions but accuracy varies with emotions. Anger and sadness are perceived most easily, followed by fear and happiness, with disgust being the most poorly perceived. Production of vocal emotion Studies have found that some emotions, such as fear, joy and anger, are portrayed at a higher frequency than emotions such as sadness. *Anger: Anger can be divided into two types: "anger" and "hot anger". In comparison to neutral speech, anger is produced with a lower pitch, higher intensity, more energy (500 Hz) across the vocalization, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Statement Analysis
Statement analysis, also called scientific content analysis (SCAN), is a technique for analyzing the words people use to try to determine if what they said is accurate. Proponents claim this technique can be used to detect concealed information, missing information, embedded confessions and whether the information that person has provided is true or false. Proponents say statement analysis has proven effective as a police interrogation technique, but critics argue that it has not been subjected to objective analysis, with most of the studies failing to have used any outside criteria to confirm whether the statements were actually true or false. As it has not been proven experimentally and is generally unaccepted by courts, skeptics call it an example of pseudoscience. About Related to statement analysis is a different technique for analyzing the words people use called "statement validity assessment" (SVA). The SVA is a tool that was originally designed to determine the credibili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voice Technology
The human voice consists of sound made by a human being using the vocal tract, including talking, singing, laughing, crying, screaming, shouting, humming or yelling. The human voice frequency is specifically a part of human sound production in which the vocal folds (vocal cords) are the primary sound source. (Other sound production mechanisms produced from the same general area of the body involve the production of unvoiced consonants, clicks, whistling and whispering.) Generally speaking, the mechanism for generating the human voice can be subdivided into three parts; the lungs, the vocal folds within the larynx (voice box), and the articulators. The lungs, the "pump" must produce adequate airflow and air pressure to vibrate vocal folds. The vocal folds (vocal cords) then vibrate to use airflow from the lungs to create audible pulses that form the laryngeal sound source. The muscles of the larynx adjust the length and tension of the vocal folds to 'fine-tune' pitch and ton ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lie Detection
Lie detection is an assessment of a verbal statement with the goal to reveal a possible intentional deceit. Lie detection may refer to a cognitive process of detecting deception by evaluating message content as well as non-verbal cues. It also may refer to questioning techniques used along with technology that record physiological functions to ascertain truth and falsehood in response. The latter is commonly used by law enforcement in the United States, but rarely in other countries because it is based on pseudoscience. There are a wide variety of technologies available for this purpose. The most common and long used measure is the polygraph. A comprehensive 2003 review by the National Academy of Sciences of existing research concluded that there was "little basis for the expectation that a polygraph test could have extremely high accuracy." There is no evidence to substantiate that Nonverbal communication, non-verbal lie detection, such as by looking at body language, is an effe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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