From different sources have come many requests for the description of the tests worked out and conclusions reached in the practical work that has been done on Ellis Island on mental defectives. For this reason I present this paper, based on tests which I have made on over 4,000 suspected defectives in the last eighteen months and many more made by my associates ... all were considered sufficiently near the required standard to be allowed to pass, except 400 certified as feeble-minded and (in a few cases) as imbeciles.
There were several other tests presented in his paper besides the cube test. In the cube test, 4 black 1" cubes were placed in a row, each cube separated by 4 inches from its neighbors. The test administrators takes a smaller cube and taps on the 4 1" cubes in increasing complicated sequences. The test subject is requested, sometimes only by sign language, to repeat the sequence. If the cubes are numbered 1 through 4, the sequences in order are:
a. 1,2,3,4
b. 1,2,3,4,3
c. 1,2,3,4,2
d. 1,3,2,4,3
e. 1,3,4,2,1
and so on.
Knox suggested that sequence a (1-2-3-4) is reasonable for a child of 4 years of age, sequence b (1-2-3-4-3) is suitable for a 5-year-old, sequence c (1-2-3-4-2) can be accomplished by a 6-year-old, sequence d (1-3-2-4) can be done by the average 8-year-old, and copying sequence e (1-3-4-2-3-1) is expected by most 11-year-olds. Some of these sequences were repeated as part of other published tests such as Arthur (1947)[citation needed] and Wright & Stone (1979).[citation needed]
Performance on the Knox Cube Imitation Test is correlated with both verbal IQ and performance IQ.[2]
Arthur Robert Jensen was an American psychologist and writer. He was a professor of educational psychology at the University of California, Berkeley. Jensen was known for his work in psychometrics and differential psychology, the study of how and why individuals differ behaviorally from one another.
Ellis Island is a federally owned island in New York Harbor, situated within the U.S. states of New York and New Jersey, that was the busiest immigrant inspection and processing station in the United States. From 1892 to 1954, nearly 12 million immigrants arriving at the Port of New York and New Jersey were processed there under federal law. Today, it is part of the Statue of Liberty National Monument and is accessible to the public only by ferry. The north side of the island is the site of the main building, now a national museum of immigration. The south side of the island, including the Ellis Island Immigrant Hospital, is open to the public only through guided tours.
An intelligence quotient (IQ) is a total score derived from a set of standardized tests or subtests designed to assess human intelligence. The abbreviation "IQ" was coined by the psychologist William Stern for the German term Intelligenzquotient, his term for a scoring method for intelligence tests at University of Breslau he advocated in a 1912 book.
XYY syndrome, also known as Jacobs syndrome, is an aneuploid genetic condition in which a male has an extra Y chromosome. There are usually few symptoms. These may include being taller than average, acne, and an increased risk of learning disabilities. The person is generally otherwise normal, including typical rates of fertility.
Human intelligence is the intellectual capability of humans, which is marked by complex cognitive feats and high levels of motivation and self-awareness. High intelligence is associated with better outcomes in life.
Sir Cyril Lodowic Burt, FBA was an English educational psychologist and geneticist who also made contributions to statistics. He is known for his studies on the heritability of IQ. Shortly after he died, his studies of inheritance of intelligence were discredited after evidence emerged indicating he had falsified research data, inventing correlations in separated twins which did not exist, alongside other fabrications.
Henry Herbert Goddard was a prominent American psychologist, eugenicist, and segregationist during the early 20th century. He is known especially for his 1912 work The Kallikak Family: A Study in the Heredity of Feeble-Mindedness, which he himself came to regard as flawed for its ahistoric depiction of the titular family, and for being the first to translate the Binet intelligence test into English in 1908 and distributing an estimated 22,000 copies of the translated test across the United States. He also introduced the term "moron" for clinical use.
The Wechsler Adult Intelligence Scale (WAIS) is an IQ test designed to measure intelligence and cognitive ability in adults and older adolescents. The original WAIS was published in February 1955 by David Wechsler, as a revision of the Wechsler–Bellevue Intelligence Scale, released in 1939. It is currently in its fourth edition (WAIS-IV) released in 2008 by Pearson, and is the most widely used IQ test, for both adults and older adolescents, in the world.
Cognitive tests are assessments of the cognitive capabilities of humans and other animals. Tests administered to humans include various forms of IQ tests; those administered to animals include the mirror test and the T maze test. Such study is important to research concerning the philosophy of mind and psychology, as well as determination of human and animal intelligence.
Mental age is a concept related to intelligence. It looks at how a specific individual, at a specific age, performs intellectually, compared to average intellectual performance for that individual's actual chronological age. The intellectual performance is based on performance in tests and live assessments by a psychologist. The score achieved by the individual is compared to the median average scores at various ages, and the mental age is derived such that the individual's score equates to the average score at age x.
IQ classification is the practice by IQ test publishers of labeling IQ score ranges with category names such as "superior" or "average".
Leta Stetter Hollingworth was an American psychologist, educator, and feminist. Hollingworth also made contributions in psychology of women; clinical psychology; and educational psychology. She is best known for her work with gifted children.
The variability hypothesis, also known as the greater male variability hypothesis, is the hypothesis that males generally display greater variability in traits than females do.
Intellectual disability (ID), also known as general learning disability in the United Kingdom and formerly mental retardation, is a generalized neurodevelopmental disorder characterized by significantly impaired intellectual and adaptive functioning. It is defined by an IQ under 70, in addition to deficits in two or more adaptive behaviors that affect everyday, general living. Intellectual functions are defined under DSM-V as reasoning, problem‑solving, planning, abstract thinking, judgment, academic learning, and learning from instruction and experience, and practical understanding confirmed by both clinical assessment and standardized tests. Adaptive behavior is defined in terms of conceptual, social, and practical skills involving tasks performed by people in their everyday lives.
The Ellis Island Immigrant Hospital was a United States Public Health Service hospital on Ellis Island, in New York Harbor, that operated from 1902 to 1951. The hospital is part of the Statue of Liberty National Monument. While the monument is managed by the National Park Service as part of the National Parks of New York Harbor office, the south side of Ellis Island, including the hospital, is managed by the non-profit Save Ellis Island Foundation and has been off-limits to the general public since its closing in 1954.
The following outline is provided as an overview of and topical guide to human intelligence:
Applicants for immigration into the United States must meet certain medical standards, as assessed by the I-693, Report of Medical Examination and Vaccination Record. The purpose of the medical exam is to ensure that an applicant is “not inadmissible to the United States on public health grounds." Inadmissibility is defined in Act 212 of the Immigration and Nationality Act (INA). Accordingly, an alien is inadmissible if he or she has a communicable disease of public health significance, lacks the required vaccines, is a drug abuser or addict, or has a physical or mental disorder with a behavior, or history of a behavior, that is a threat to “the property, safety, or welfare of the alien or others”.
The relationship between intelligence and education is one that scientists have been studying for years. It is correct to say that higher level of education leads to greater level of intelligence and also true the other way around, however, it does not apply for every situation.
Howard Andrew Knox was an American medical doctor and eugenicist specializing in heart and rheumatic diseases. Serving as an assistant surgeon at Ellis Island during the early 1900s, he made major contributions to intelligence testing through the methods he devised to screen immigrants for mental deficiencies. However, at the time of his death, he was most well known as a veteran, a general physician, and a contributing member of his community, and his contributions to intelligence testing had become largely forgotten. Although his work in this area has become largely overlooked, his contributions have served as an important link between early intelligence research and present day intelligence testing.
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