Wolfgang Köhler
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Wolfgang Köhler (21 January 1887 â€“ 11 June 1967) was a German
psychologist A psychologist is a professional who practices psychology and studies mental states, perceptual Perception () is the organization, identification, and interpretation of sensory information in order to represent and understand the pre ...
and phenomenologist who, like
Max Wertheimer Max Wertheimer (April 15, 1880 – October 12, 1943) was an Austro-Hungarian psychologist who was one of the three founders of Gestalt psychology, along with Kurt Koffka and Wolfgang Köhler. He is known for his book, ''Productive Thinking'', an ...
and Kurt Koffka, contributed to the creation of Gestalt psychology. During the Nazi regime in
Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwee ...
, he protested against the dismissal of Jewish professors from universities, as well as the requirement that professors give a Nazi salute at the beginning of their classes. In 1935 he left the country for the
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...
, where
Swarthmore College Swarthmore College ( , ) is a private liberal arts college in Swarthmore, Pennsylvania. Founded in 1864, with its first classes held in 1869, Swarthmore is one of the earliest coeducational colleges in the United States. It was established as ...
in
Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...
offered him a professorship. He taught with its faculty for 20 years, and did continuing research. A ''
Review of General Psychology ''Review of General Psychology'' is the quarterly scientific journal of the American Psychological Association Division 1: The Society for General Psychology. The journal publishes cross-disciplinary psychological articles that are conceptual, the ...
'' survey, published in 2002, ranked Köhler as the 50th most cited psychologist of the 20th century.


Early life

Köhler was born in the port city of Reval (now Tallinn), Governorate of Estonia,
Russian Empire The Russian Empire was an empire and the final period of the Russian monarchy from 1721 to 1917, ruling across large parts of Eurasia. It succeeded the Tsardom of Russia following the Treaty of Nystad, which ended the Great Northern War ...
. His family was ethnic German, and shortly after his birth, they moved to Germany.


Education

In the course of his university education, Köhler studied at the
University of Tübingen The University of Tübingen, officially the Eberhard Karl University of Tübingen (german: Eberhard Karls Universität Tübingen; la, Universitas Eberhardina Carolina), is a public research university located in the city of Tübingen, Baden-Wà ...
(1905–06), the
University of Bonn The Rhenish Friedrich Wilhelm University of Bonn (german: Rheinische Friedrich-Wilhelms-Universität Bonn) is a public research university located in Bonn, North Rhine-Westphalia, Germany. It was founded in its present form as the ( en, Rhine ...
(1906–07) and the
University of Berlin Humboldt-Universität zu Berlin (german: Humboldt-Universität zu Berlin, abbreviated HU Berlin) is a German public research university in the central borough of Mitte in Berlin. It was established by Frederick William III on the initiative ...
(1907–09). While a student at the latter, he focused on the link between physics and psychology, in the course of which he studied with two leading scholars in those fields,
Max Planck Max Karl Ernst Ludwig Planck (, ; 23 April 1858 – 4 October 1947) was a German theoretical physicist whose discovery of energy quanta won him the Nobel Prize in Physics in 1918. Planck made many substantial contributions to theoretical p ...
and
Carl Stumpf Carl Stumpf (; 21 April 1848 – 25 December 1936) was a German philosopher, psychologist and musicologist. He is noted for founding the Berlin School of Experimental Psychology. He studied with Franz Brentano at the University of Würzburg ...
, respectively. He completed his Ph.D. thesis (titled ''Akustische Untersuchungen'' coustic investigations in 1909. His dissertation addressed certain aspects of
psychoacoustics Psychoacoustics is the branch of psychophysics involving the scientific study of sound perception and audiology—how humans perceive various sounds. More specifically, it is the branch of science studying the psychological responses associated wi ...
; Köhler had Stumpf as his advisor.


Gestalt psychology

In 1910–13, he was an assistant at the Psychological Institute in
Frankfurt Frankfurt, officially Frankfurt am Main (; Hessian: , " Frank ford on the Main"), is the most populous city in the German state of Hesse. Its 791,000 inhabitants as of 2022 make it the fifth-most populous city in Germany. Located on it ...
in which he worked with fellow psychologists
Max Wertheimer Max Wertheimer (April 15, 1880 – October 12, 1943) was an Austro-Hungarian psychologist who was one of the three founders of Gestalt psychology, along with Kurt Koffka and Wolfgang Köhler. He is known for his book, ''Productive Thinking'', an ...
and Kurt Koffka. He and Koffka functioned as subjects for Wertheimer's now-famous studies of apparent movement (or the
phi phenomenon The term phi phenomenon is used in a narrow sense for an apparent motion that is observed if two nearby optical stimuli are presented in alternation with a relatively high frequency. In contrast to beta movement, seen at lower frequencies, the s ...
), which led them in turn to conclusions about the inherent nature of vision. They collaborated on the founding of a new holistic attitude toward psychology called Gestalt theory (from the German word for "shape" or "form"), aspects of which are indebted to the earlier work of Stumpf (Köhler's teacher) and
Christian von Ehrenfels Christian von Ehrenfels (also ''Maria Christian Julius Leopold Freiherr von Ehrenfels''; 20 June 1859 – 8 September 1932) was an Austrian philosopher, and is known as one of the founders and precursors of Gestalt psychology. Christian von Ehre ...
(whose lectures at the University of Prague Wertheimer had attended). In an introduction to the book, ''The Task of Gestalt Psychology,'' Carroll Pratt emphasizes Köhler's irritation at misinterpretation of his famous quote, "The whole is different from the sum of its parts". Though perhaps a simple error made in translation, many lectures in textbooks of modern-day psychology refer to Gestalt theory by saying "the whole is greater than the sum of its parts". When the word 'different' is used, as Köhler originally stated, it implies that the whole bears no resemblance to the parts creating it. Most psychologists, however, understand "greater" to mean that the relationship between the parts is ''itself'' a significant part of the whole, something that is not present in the other parts if simply summed up. Example: if all the parts of a car are laid out on the floor of a garage, they do not make up a car. Only when the factor of assembly is added to the parts, do they become a car.


Problem solving

In 1913, Köhler left Frankfurt for the island of
Tenerife Tenerife (; ; formerly spelled ''Teneriffe'') is the largest and most populous island of the Canary Islands. It is home to 43% of the total population of the Archipelago, archipelago. With a land area of and a population of 978,100 inhabitant ...
in the
Canary Islands The Canary Islands (; es, :es:Canarias, Canarias, ), also known informally as the Canaries, are a Spanish Autonomous communities of Spain, autonomous community and archipelago in the Atlantic Ocean, in Macaronesia. At their closest point to ...
, where he had been named the director of the
Prussian Academy of Sciences The Royal Prussian Academy of Sciences (german: Königlich-Preußische Akademie der Wissenschaften) was an academy established in Berlin, Germany on 11 July 1700, four years after the Prussian Academy of Arts, or "Arts Academy," to which "Berlin ...
anthropoid Anthropoid means 'ape/human feature' and may refer to: *Simian, monkeys and apes (anthropoids, or suborder Anthropoidea, in earlier classifications) * Anthropoid apes - apes that are closely related to humans (e.g., former family Pongidae and some ...
research station. He worked there for six years, during which he wrote a book on
problem solving Problem solving is the process of achieving a goal by overcoming obstacles, a frequent part of most activities. Problems in need of solutions range from simple personal tasks (e.g. how to turn on an appliance) to complex issues in business an ...
titled '' The Mentality of Apes'' (1917). In this research, Köhler observed how chimpanzees solve problems, such as that of retrieving bananas when positioned out of reach. He found that they stacked wooden crates to use as makeshift ladders, in order to retrieve the food. If the bananas were placed on the ground outside of the cage, they used sticks to lengthen the reach of their arms. Köhler concluded that the chimps had not arrived at these methods through
trial-and-error Trial and error is a fundamental method of problem-solving characterized by repeated, varied attempts which are continued until success, or until the practicer stops trying. According to W.H. Thorpe, the term was devised by C. Lloyd Morgan (18 ...
(which American psychologist
Edward Thorndike Edward Lee Thorndike (August 31, 1874 – August 9, 1949) was an American psychologist who spent nearly his entire career at Teachers College, Columbia University. His work on comparative psychology and the learning process led to the theory ...
had claimed to be the basis of all animal learning, through his law of effect), but rather that they had an
insight Insight is the understanding of a specific cause and effect within a particular context. The term insight can have several related meanings: *a piece of information *the act or result of understanding the inner nature of things or of seeing intui ...
, in which, having realized the answer, they proceeded to carry it out in a way that was, in Köhler's words, "unwaveringly purposeful." This is one of the prominent findings from the research done on apes. Köhler's work on the mentality of apes was seen as a turning point in the psychology of thinking. He believed that people underestimated the influence of a number of external conditions on such higher animals. In his book, ''The Mentality of Apes'', Köhler explains that he was inspired to work with the chimpanzees for two main reasons. The first was because the "structure of their brains is more closely related to the chemistry of the human body and brain-structure than to the chemical nature of the lower apes and their brain development".Köhler (1925) He was intrigued that human traits could be observed in the everyday behaviours of this animal. Secondly, he wanted to study the chimps to gain knowledge of the nature of intelligent acts. In the early stages of observing chimps, it was clear that the examinations should not be considered characteristic for each member of this species. Köhler recognized that, as in humans, chimpanzees demonstrated considerable differences in the intellectual field. Chimps demonstrated that they were able to grasp the objects around them in a variety of fashions. This is incorporated in their everyday playing behaviours. For this reason, it was not necessary to use experimental tests to introduce chimps to handle matter. In his book, ''The Mentality of Apes'', Köhler describes how the apes use their hands, saying "large, powerful and flexible hands are natural links between himself and the world of things, and he attains the necessary amount of muscular force and co-ordination at an earlier age than the human child". Köhler made most of his observations during the first six months of 1914, while working with Mr. Teuber. They provided the animals with problems that would be difficult but not impossible for the chimps to solve. The conclusions drawn from the experiments with apes were that these animals exhibit insight and that they demonstrate intelligent behaviour that is common in humans. Köhler states that these findings hold true for every member of the species. He describes that "the correlation between intelligence and the development of the brain is confirmed". Köhler points out that a downfall of educational psychology at the time of the experiments with apes was that it had yet to create a test that was capable of assessing how far mentally healthy and mentally-ill children could go in particular situations. Köhler believed that studies of this type could be performed on young children, and that future research should focus on these possibilities. He stated that: "where the lack of human standards makes itself so much felt, I should like to emphasize particularly the importance and- if the anthropoids do not deceive us- the fruitfulness of further work in this direction".


Criticism of introspection

In his book titled ''Gestalt Psychology,'' Köhler criticized the concepts of
introspection Introspection is the examination of one's own conscious thoughts and feelings. In psychology, the process of introspection relies on the observation of one's mental state, while in a spiritual context it may refer to the examination of one's sou ...
, a sub-discipline in psychology that was dominant in Germany throughout the late 1800s and early 1900s. Stemming from the ideas of the structuralist psychologists, introspection was defined as the self-reporting of conscious thoughts and sensations. It was believed that
consciousness Consciousness, at its simplest, is sentience and awareness of internal and external existence. However, the lack of definitions has led to millennia of analyses, explanations and debates by philosophers, theologians, linguisticians, and scien ...
could be understood by breaking its elements down into basic parts. Köhler was quick to dismiss this train of thought. He claimed that the introspectionists were too subjective in their methodologies and did not test for reliability in their findings. For example, the description of sensing the colour red made by one individual may not be the same as the description of another. Where the introspectionists failed was their inability to adequately replicate particular findings. If one person was tested for sensations regarding the colour red, these descriptions were simply shared among followers of the discipline. These descriptions were automatically taken as valid, and no further testing of a particular sensation took place. In addition to this, Köhler claimed that introspection did not focus on immediate problems regarding direct human experience. He believed that an important goal of empirical science was to obtain objective results that apply to almost everyone. The introspectionists, according to Köhler, did not consider objective experience a key point in their science.


Opinions on behaviorism

Köhler was also vocal in his stance against
behaviorism Behaviorism is a systematic approach to understanding the behavior of humans and animals. It assumes that behavior is either a reflex evoked by the pairing of certain antecedent stimuli in the environment, or a consequence of that individual ...
, another competing school of thought in North America. At the time, behaviourism focused solely on overt acts that were easily observable and measurable. Inner thoughts, feelings, and processes that occurred between the presentation of a stimulus and the onset of behaviour were considered part of a black box not easily understood. This black box, which could be described as cognition today, was not accessible and therefore should be discarded from psychology as being something unimportant. Köhler criticized the behaviourists' dismissal of direct experience. They said that it was not measurable, and therefore did not contribute to the furthering of human understanding. Köhler analyzed the difference between overt and
covert Secrecy is the practice of hiding information from certain individuals or groups who do not have the "need to know", perhaps while sharing it with other individuals. That which is kept hidden is known as the secret. Secrecy is often controvers ...
behaviours. He argued that the behaviourists focused solely on overt behaviours in order to make inferences concerning human functioning. Using his background in physiology, Köhler suggested that covert behaviours (such as heart rate and
blood pressure Blood pressure (BP) is the pressure of circulating blood against the walls of blood vessels. Most of this pressure results from the heart pumping blood through the circulatory system. When used without qualification, the term "blood pressure ...
) could offer additional insight into how we function and interact with the environment. In ''Gestalt Psychology'', Köhler describes advancements made in physiological research and the tools created to measure covert behaviours. Covert behaviours such as increased heart rate could provide additional insight into how people interact with particular stimuli. The behaviourists, according to Köhler, never adequately utilized these new instruments to make sound inferences on human behaviour. Köhler argued against the idea that direct experience was not measurable or usable. Drawing upon his personal experience and interest in the field of physics, Köhler posed the example of two physicists observing a galvanometer (an instrument that detects and measures electric current) and making inferences based on the information it provides. According to Köhler, behaviourists act in a similar way when observing behaviours. One behaviourist will observe a behaviour and share results, leading to an extension of these findings by others in the field. While behaviourism denies direct experience, Köhler suggests that behaviourists are unknowingly accepting it in this regard. Just as the galvanometer is independent of the physicist, so is the subject from the behaviourist. Direct experience results in the observation of phenomena and leads to results. In this regard, he felt that the standpoint of the behaviourists appears somewhat paradoxical.


Berlin Psychological Institute

Köhler returned to Germany in 1920, and soon after was appointed the acting director, and then (as Carl Stumpf's successor) professor and director of the Psychological Institute at the University of Berlin, where he remained until 1935. In those fifteen years, his accomplishments were considerable, including, for example, the directorship of the school's prestigious graduate program in psychology; the co-founding of an influential journal about perceptual psychology, titled ''Psychologische Forschung'' (Psychological Research: Journal of Psychology and its Neighboring Fields); and the authorship of an early book titled ''Gestalt Psychology'' (1929), written especially for an American audience. During the 1920s and early 1930s psychology reached a high point at the institute. Aside from Köhler, many other influential minds were at work.
Max Wertheimer Max Wertheimer (April 15, 1880 – October 12, 1943) was an Austro-Hungarian psychologist who was one of the three founders of Gestalt psychology, along with Kurt Koffka and Wolfgang Köhler. He is known for his book, ''Productive Thinking'', an ...
was part of the institute from 1916 to 1929, until he left to take a position in Frankfurt. In addition, Kurt Lewin remained at the institute until 1933 (the year of his resignation). Köhler also had many well-known assistants at the institute, including Karl Duncker, whose work revolved around problem solving and induced movement. Von Lauenstein, another assistant of Köhler, is known mainly for his investigation of time errors and memory. Finally, von Restorff is best known for her collaboration efforts with Köhler on both the isolation effect and theory of recall.


Nazi Germany

The
Nazi party The Nazi Party, officially the National Socialist German Workers' Party (german: Nationalsozialistische Deutsche Arbeiterpartei or NSDAP), was a far-right political party in Germany active between 1920 and 1945 that created and supported t ...
, led by
Adolf Hitler Adolf Hitler (; 20 April 188930 April 1945) was an Austrian-born German politician who was dictator of Germany from 1933 until his death in 1945. He rose to power as the leader of the Nazi Party, becoming the chancellor in 1933 and the ...
, rose to power on January 30, 1933. The regime started practicing discriminatory policies against Jews, and dismissed any professors with a Jewish background from German universities.
Max Planck Max Karl Ernst Ludwig Planck (, ; 23 April 1858 – 4 October 1947) was a German theoretical physicist whose discovery of energy quanta won him the Nobel Prize in Physics in 1918. Planck made many substantial contributions to theoretical p ...
, the well-known physicist, petitioned Hitler to stop the dismissal of Jewish professors, stressing their importance regarding scientific contributions. Hitler has been quoted as responding to Planck, "if the dismissal of Jewish scientists means the annihilation of contemporary German science, then we shall do without science for a few years". Köhler did not make a public stand against the Nazi regime until the end of April 1933. During the beginning of that month, he still expressed ambivalence as to how serious a threat was posed by the regime. He was wary, but did not become more active against the Nazis until they forced the dismissal of Karl Planck, another well-known experimental physicist. On April 28, 1933, Köhler wrote an article titled "Gespräche in Deutschland" (Conversations in Germany). It was written for the ''
Deutsche Allgemeine Zeitung ''Deutsche Allgemeine Zeitung'' (often abbreviated to DAZ) was a German newspaper that appeared between 1861 and 1945. Until 1918 the title of the paper was ''Norddeutsche Allgemeine Zeitung''. Although Wilhelm Liebknecht, one of the founders ...
'' and is officially the last published article that openly attacked the Nazi Regime during their reign. After the article was published, Köhler expected immediate arrest. But, the Nazis did not come for him. Even four months after the article was originally published, reprints were still being distributed. Köhler received numerous letters from Jews and non-Jews, expressing their gratitude and admiring his courage. To strengthen his stance against the Nazis, Köhler also sought assistance from his colleagues. To his disappointment, many of his colleagues refused to become involved in the anti-Nazi movement. Some suggested the Nazis would not be able to take over the large and complex German political system. In addition, some colleagues argued that Köhler's resistance fell outside their particular spheres of influence. In turn, they could contribute nothing. On November 3, 1933, the Nazi government demanded that professors begin their lectures by giving the Nazi salute. Köhler thought this was a violation of his own beliefs and told his students that he was unable to engage in such an act. His explanation was met with applause, from both Nazi sympathizers and rebels alike. His situation at the institute began to deteriorate more quickly after this statement. In December 1933, Nazi officials stood outside Köhler's seminar room. As students left, the officials stopped them and examined their student cards. Although Köhler did not interfere, he later contacted the institute rector, Eugen Fischer, complaining that an unannounced raid had occurred. After much disagreement and several more unannounced inspections of his students, Köhler took the situation further since his wishes were not being considered nor respected. He requested retirement from the institution in May 1934.Henle, M. (1978). One man against the Nazis: Wolfgang Köhler. American Psychologist, 33(10), 939–944. https://doi.org/10.1037/0003-066X.33.10.939 This drew the attention of the Ministry and they would finally intervene in July 1934 by running an investigation of the interactions between Köhler and the rector as well as the personal attacks he received from the German student organizations.


Later life

After being left out of important decision making of the Psychological Institute of the University of Berlin and losing important assistants, who represent new points of view, Köhler found it impossible to for him to continue his work. Köhler officially resigned from the Psychological Institute of the University of Berlin and emigrated to the USA in 1935. He was offered a professorship at
Swarthmore College Swarthmore College ( , ) is a private liberal arts college in Swarthmore, Pennsylvania. Founded in 1864, with its first classes held in 1869, Swarthmore is one of the earliest coeducational colleges in the United States. It was established as ...
, where he served on the faculty for twenty years. In 1956, he became a research professor at
Dartmouth College Dartmouth College (; ) is a private research university in Hanover, New Hampshire. Established in 1769 by Eleazar Wheelock, it is one of the nine colonial colleges chartered before the American Revolution. Although founded to educate Native ...
. Soon after, he also served as the president of the
American Psychological Association The American Psychological Association (APA) is the largest scientific and professional organization of psychologists in the United States, with over 133,000 members, including scientists, educators, clinicians, consultants, and students. It ha ...
. He lectured freely in the United States and made yearly visits to the
Free University of Berlin The Free University of Berlin (, often abbreviated as FU Berlin or simply FU) is a public research university in Berlin, Germany. It is consistently ranked among Germany's best universities, with particular strengths in political science and t ...
. Here, he acted as an adviser for the faculty. He kept the psychologists in touch with American psychology by collaborating with them in research and enthusiastically engaging in discussions with them. He died in 1967 in Enfield, New Hampshire.


Family life

Köhler married the painter and sculptor Thekla Achenbach in 1912. They had two children in Germany (Claus, born 1912 and Marianne, born 1913) and two more when they lived in Tenerife (Peter, born 1915 and Martin, born 1918). This marriage ended in divorce and in 1927 he married Lili Harlemann by whom he had a daughter, Karin (born 1928).


Legacy and honors

*1956, Distinguished Scientific Contributions Award of the American Psychological Association. *In 1967 the Association planned to give him its gold medal, but he died before it could be awarded. *The Wolfgang Köhler Primate Research Center was established at
Leipzig Zoo Leipzig Zoological Garden, or Leipzig Zoo (german: link=no, Zoologischer Garten Leipzig) is a zoo in Leipzig`s district Mitte, Germany. It was first opened on June 9, 1878. It was taken over by the city of Leipzig in 1920 after World War I and n ...
as a project of the
Max Planck Institute for Evolutionary Anthropology The Max Planck Institute for Evolutionary Anthropology (german: Max-Planck-Institut für evolutionäre Anthropologie, shortened to MPI EVA) is a research institute based in Leipzig, Germany, that was founded in 1997. It is part of the Max Plan ...
, directed by Michael Tomasello and Josep Call.


Books by Köhler

These are the editions in English: *1925. '' The mentality of apes'', transl. from the 2nd German edition by
Ella Winter Leonore (Ella) Sophie Winter Steffens Stewart (1898–1980) was an Australian-British journalist and activist. Early life She was born in 1898 to Freda Lust and Adolph Wertheimer in Nuremberg, Germany. Her parents were Freda Lust and Adolph W ...
. London: Kegan, Trench and New York:
Harcourt, Brace and World Harcourt () was an American publishing firm with a long history of publishing fiction and nonfiction for adults and children. The company was last based in San Diego, California, with editorial/sales/marketing/rights offices in New York City ...
. Original was ''Intelligenzprüfungen an Anthropoiden'', Berlin 1917. 2nd German edition was titled ''Intelligenzprüfungen an Menschenaffen'', Berlin: Springer 1921. Liveright 1976 reprint: *1929. ''Gestalt psychology''. New York: Liveright. London: Bell 1930. A heavily revised translation into German, ''Psychologische Probleme'', was published in 1933 by Springer, Berlin. *1938. ''The place of value in a world of facts''. New York: Liveright. Norton reprint 1976: *1940. ''Dynamics in psychology''. New York: Liveright. *1947. ''Gestalt psychology: an introduction to new concepts in modern psychology''. New York: Liveright. A revised edition of the 1929 book. Norton 1992 reprint: *1969. ''The task of gestalt psychology''. Princeton University Press. *1971. Henle, Mary (ed). ''The selected papers of Wolfgang Köhler''. New York: Liveright.


See also

* Bouba/kiki effect *
Berlin School of experimental psychology The Berlin School of Experimental Psychology is founded by Carl Stumpf, a pupil of Franz Brentano and Hermann Lotze and a professor at the University of Berlin. It adhered to the method of experimental phenomenology, which understood it as the scien ...
*
Max Wertheimer Max Wertheimer (April 15, 1880 – October 12, 1943) was an Austro-Hungarian psychologist who was one of the three founders of Gestalt psychology, along with Kurt Koffka and Wolfgang Köhler. He is known for his book, ''Productive Thinking'', an ...
* Kurt Koffka * Kurt Lewin * Pál Schiller Harkai * Rudolf Arnheim


References


Sources

* Ash, Mitchell G. ''Gestalt Psychology in German Culture, 1890–1967: Holism and the Quest for Objectivity.'' Cambridge: Cambridge Studies in the History of Psychology, 1996. * Benjafield, J. G. "Revisiting Wittgenstein on Köhler and Gestalt psychology," ''Journal of Historical Behavior'', vol. 44, no. 2 (2008), pp. 99–118. * Ellis, Willis D. ''A source book of Gestalt psychology''. New York:
Routledge Routledge () is a British multinational publisher. It was founded in 1836 by George Routledge, and specialises in providing academic books, journals and online resources in the fields of the humanities, behavioural science, education, law ...
, 1999. * Henle, Mary. (1978). One man against the Nazis â€” Wolfgang Kohler. ''
American Psychologist ''American Psychologist'' is a peer-reviewed academic journal published by the American Psychological Association. The journal publishes articles of broad interest to psychologists, including empirical reports and scholarly reviews covering scien ...
'', ''33'', 939-944. * Henle, M. (1993). Man's place in nature in the thinking of Wolfgang Köhler. Journal of the History of the Behavioral Sciences, 29, 3-7. * Jaeger, Siegfried. ''Gestaltpsychologie : Wolfgang Köhler und seine Zeit.'' Berlin : Universitätsbibliothek der Freien Universität Berlin, 1990. * King, D. Brett, and Michael Wertheimer. ''Max Wertheimer and Gestalt Theory''. Piscataway:
Transaction Publishers Transaction Publishers was a New Jersey-based publishing house that specialized in social science books and journals. It was located on the Livingston Campus of Rutgers University. Transaction was sold to Taylor & Francis in 2016 and merged wit ...
, 2007. * Müller, M. (1987). Wolfgang Köhler in Germany: His life, word and influence until the beginning of the 1930s. Gestalt Theory, 9, 288-298. * Seidner, Stanley S. (1989). "Köhler's Dilemma", In ''Issues of Language Assessment''. vol 3. Ed., Stanley S. Seidner. Springfield, Il.: State Board of Education. * Smith, Barry (1988).
Foundations of Gestalt Theory
', Munich and Vienna: Philosophia * Von Hornbostel, Erich M. "The unity of the senses," '' Psyche'', vol. 7, no. 28, (1927), pp. 83–89.


External links


Comprehensive Gestalt psychology website of the international Society for Gestalt Theory and its Applications - GTA






* ttp://vlp.mpiwg-berlin.mpg.de/people/data?id=per312 Biography and bibliographyin the Virtual Laboratory of the Max Planck Institute for the History of Science
National Academy of Sciences Biographical Memoir
{{DEFAULTSORT:Kohler, Wolfgang 1887 births 1967 deaths People from Tallinn People from the Governorate of Estonia Baltic-German people German emigrants to the United States German psychologists Gestalt psychologists Emigrants from the Russian Empire to Germany Presidents of the American Psychological Association University of Bonn alumni People from Enfield, New Hampshire Members of the United States National Academy of Sciences 20th-century American psychologists