John C. Raven
John Carlyle Raven ( born June 28, 1902 in London, † August 10 1970 in London) was a British psychologist and was made famous by the development of the Progressive Matrices 1938. He was a pupil of Charles Spearman.
When Ravens Progressive Matrices Test is a nonverbal IQ test, which begins with relatively simple tasks and is becoming increasingly complex. Must be adapted Unlike intelligence tests such as the Binet - Simon test or the Wechsler tests ( AS or the WISC ) , whose results are to some degree influenced by the individual language development and cultural differences, Ravens Matrices are as language- free test methods not subject to this problem.
Biography
J. C. Raven was born on June 28, 1902 at London's Highbury son of an umbrella factory. After completion of the polytechnic - scientific high school and at King's College in London, where he earned a Bachelor of Science degree, he worked as a teacher and then became director of a school for mentally handicapped children. 1934 Raven was part of a research team that explored important ongoing processes in the perception ( objects and phenomena are reflected to understanding profit about how processed in the brain sense).
Raven continued his studies at the University of London, where he received his Masters in Psychology in April 1936. Initial tests of intelligence diagnosis he carried out in the years 1937-1938 in Colchester. Participated in the study had children in two groups, one at the age of five to 14 years, the other at the age of three and four years. In 1938, the Standard Progressive Matrices were published as a nonverbal, culture- independent intelligence test.
In 1941, he was employed at the Mill Hill Emergency Hospital, where he developed a spachbasierten intelligence test, known as the Mill Hill Vocabulary Scale. In addition, he was entrusted with the construction of a selection procedure for officers in Hemstead. During the Second World War, the Progressive Matrices were used for the selection of candidates for job recruits and officer positions. From the mid- 40s, these tests have been used progressively in civilian life in the context of personnel selection procedures.
J. C. Raven died unexpectedly on August 10, 1970. His sons continued continued his work and founded in 1972 in Scotland the test publisher JC Raven Ltd.. under the leadership of the eldest son Dr. John Raven.