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Thorleif Schjelderup-Ebbe
Thorleif Schjelderup-Ebbe (12 November 1894 in Kristiania – 8 June 1976 in Oslo) was a Norwegian zoologist and comparative psychologist. He was the first person to describe a pecking order of hens. Career Thorleif Schjelderup-Ebbe was at the age of 19, in 1913, the first to describe a pecking order of hens. He based findings on an interest in observing chickens at a farm where he spend his summer holidays. The dominance hierarchy of chickens and other birds that he studied led him to the observation that hens had an established social order determining who dared to peck whom in a fight. This order was, Schjelderup-Ebbe concluded, not necessarily dependent on the strength or age of the hens, and not necessarily a strict ranking as he even observed triangles of dominance. Schjelderup-Ebbe studied for a Ph.D. in Germany, tried to present his thesis in Oslo, but was rejected.Price, 1995. Personal life He was the son of sculptors Axel Emil Ebbe (1868–1941) and Menga Schjelderup (18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oslo
Oslo ( , , or ; sma, Oslove) is the capital and most populous city of Norway. It constitutes both a county and a municipality. The municipality of Oslo had a population of in 2022, while the city's greater urban area had a population of in 2019, and the metropolitan area had an estimated population of in 2021. During the Viking Age the area was part of Viken. Oslo was founded as a city at the end of the Viking Age in 1040 under the name Ánslo, and established as a ''kaupstad'' or trading place in 1048 by Harald Hardrada. The city was elevated to a bishopric in 1070 and a capital under Haakon V of Norway around 1300. Personal unions with Denmark from 1397 to 1523 and again from 1536 to 1814 reduced its influence. After being destroyed by a fire in 1624, during the reign of King Christian IV, a new city was built closer to Akershus Fortress and named Christiania in honour of the king. It became a municipality ('' formannskapsdistrikt'') on 1 January 1838. The city fu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoologist
Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch of biology that studies the Animal, animal kingdom, including the anatomy, structure, embryology, evolution, Biological classification, classification, Ethology, habits, and distribution of all animals, both living and extinction, extinct, and how they interact with their ecosystems. The term is derived from Ancient Greek , ('animal'), and , ('knowledge', 'study'). Although humans have always been interested in the natural history of the animals they saw around them, and made use of this knowledge to domesticate certain species, the formal study of zoology can be said to have originated with Aristotle. He viewed animals as living organisms, studied their structure and development, and considered their adaptations to their surroundings and the function of their parts. The Greek physician Galen studied human anatomy and was one of the greatest surgeons of the a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comparative Psychologist
Comparative psychology refers to the scientific study of the behavior and mental processes of non-human animals, especially as these relate to the phylogenetic history, adaptive significance, and development of behavior. Research in this area addresses many different issues, uses many different methods and explores the behavior of many different species from insects to primates. Comparative psychology is sometimes assumed to emphasize cross-species comparisons, including those between humans and animals. However, some researchers feel that direct comparisons should not be the sole focus of comparative psychology and that intense focus on a single organism to understand its behavior is just as desirable; if not more so. Donald Dewsbury reviewed the works of several psychologists and their definitions and concluded that the object of comparative psychology is to establish principles of generality focusing on both proximate and ultimate causation.Dewsbury, D. (1984). ''Comparative Psy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dominance Hierarchy
In biology, a dominance hierarchy (formerly and colloquially called a pecking order) is a type of social hierarchy that arises when members of animal social animal , social groups interact, creating a ranking system. A dominant higher-ranking individual is sometimes called an alpha, and the submissive lower-ranking individual a beta. Different types of interactions can result in dominance depending on the species, including ritualized displays of aggression or direct physical violence. In social living groups, members are likely to compete for access to limited resources and mating , mating opportunities. Rather than fighting each time they meet, relative rank is established between individuals of the same sex, with higher-ranking individuals often gaining more access to resources and mates. Based on repetitive interactions, a social order is created that is subject to change each time a dominant animal is challenged by a subordinate one. Definitions Dominance is an individu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicken
The chicken (''Gallus gallus domesticus'') is a domesticated junglefowl species, with attributes of wild species such as the grey and the Ceylon junglefowl that are originally from Southeastern Asia. Rooster or cock is a term for an adult male bird, and a younger male may be called a cockerel. A male that has been castrated is a capon. An adult female bird is called a hen and a sexually immature female is called a pullet. Humans now keep chickens primarily as a source of food (consuming both their meat and eggs) and as pets. Traditionally they were also bred for cockfighting, which is still practiced in some places. Chickens are one of the most common and widespread domestic animals, with a total population of 23.7 billion , up from more than 19 billion in 2011. There are more chickens in the world than any other bird. There are numerous cultural references to chickens – in myth, folklore and religion, and in language and literature. Genetic studies have pointed to mult ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dag Schjelderup-Ebbe
Dag Schjelderup-Ebbe (10 December 1926 – 1 February 2013) was a Norwegian musicologist, composer, music critic and biographer. He was a lecturer at the University of Oslo for thirty years, from 1973 with the title of professor. His research mainly centered on the Norwegian composer Edvard Grieg. Life and career Schjelderup-Ebbe was born in Oslo as the son of zoologist Thorleif Schjelderup-Ebbe and Torbjørg Brekke. He graduated in musicology from the University of California, Berkeley in 1950, and started teaching at the University of Oslo the same year. In 1953 he published the work ''A Study of Grieg's Harmony'', and in 1964 the work ''Edvard Grieg 1858–1867'', which was also the basis for his doctorate thesis. In addition to his university assignment he also worked as a music critic for the newspaper '' Vårt Land'' from 1957 to 1963, and for ''Verdens Gang'' from 1963 to 1973. He was appointed professor at the University of Oslo from 1973 to 1980. He co-wrote the biogra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Murchison
Carl Allanmore Murchison (1887–1961) was an American psychologist and an early promoter of the discipline of psychology. Unlike most psychologists who became prominent in the history books, Murchison was not an influential theorist or researcher. Instead, he was an extremely active organizer, publisher, and editor. Murchison received his Ph.D. in social psychology from Johns Hopkins University in 1923. He taught at Clark University from 1923 to 1936. During most of this time he served as the chair of the psychology department. Carl Murchison edited ''The Psychological Register'' in 1929, and the first ''Handbook of Social Psychology'' in 1935. He founded and served as editor of a total of five psychology journals, all of which still exist today.Kimble, G. A., Boneau, C. A., Wertheimer, M. (1996) ''Portraits of pioneers in psychology, Volume II''. Washington, D.C. American Psychological Association. These include the '' Journal of Psychology'', the '' Journal of General Psychol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Journal Of Social Psychology
''The Journal of Social Psychology'' is a bimonthly academic journal covering social psychology published by Routledge, who acquired it from Heldref Publications in 2009. The journal was established in 1929 by John Dewey and Carl Murchison. It covers all areas of basic and applied social psychology. The journal was subtitled ''Political, Racial and Differential Psychology'' until changing its name in 1949. The Journal incorporated with Genetic, Social, and General Psychology Monographs between 1925 - 2006 Contents The ''Journal of Social Psychology'' focuses on original empirical research. Most of the articles report laboratory or field research that covers a variety of topics in core areas of social and organizational psychology, including (but not limited to): the self and social identity, person perception and social cognition, attitudes and persuasion, social influence, consumer behavior, decision making, groups and teams, stereotypes and discrimination, interpersonal attract ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1894 Births
Events January–March * January 4 – A military alliance is established between the French Third Republic and the Russian Empire. * January 7 – William Kennedy Dickson receives a patent for motion picture film in the United States. * January 9 – New England Telephone and Telegraph installs the first battery-operated telephone switchboard, in Lexington, Massachusetts Lexington is a suburban town in Middlesex County, Massachusetts, United States. It is 10 miles (16 km) from Downtown Boston. The population was 34,454 as of the 2020 census. The area was originally inhabited by Native Americans, and was firs .... * February 12 ** French anarchist Émile Henry (anarchist), Émile Henry sets off a bomb in a Paris café, killing one person and wounding twenty. ** The barque ''Elisabeth Rickmers'' of Bremerhaven is wrecked at Haurvig, Denmark, but all crew and passengers are saved. * February 15 ** In Korea, peasant unrest erupts in the Donghak Peasant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1976 Deaths
Events January * January 3 – The International Covenant on Economic, Social and Cultural Rights enters into force. * January 5 – The Pol Pot regime proclaims a new constitution for Democratic Kampuchea. * January 11 – The 1976 Philadelphia Flyers–Red Army game results in a 4–1 victory for the National Hockey League's Philadelphia Flyers over HC CSKA Moscow of the Soviet Union. * January 16 – The trial against jailed members of the Red Army Faction (the West German extreme-left militant Baader–Meinhof Group) begins in Stuttgart. * January 18 ** Full diplomatic relations are established between Bangladesh and Pakistan 5 years after the Bangladesh Liberation War. ** The Scottish Labour Party is formed as a breakaway from the UK-wide party. ** Super Bowl X in American football: The Pittsburgh Steelers defeat the Dallas Cowboys, 21–17, in Miami. * January 21 – First commercial Concorde flight, from London to Bahrain. * January 27 ** The United States v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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