Origins of Scientific Psychology in America

In 1893, the Chicago World's Fair showcased a Psychology Laboratory exhibit organized by Joseph Jastrow.
The exhibit aimed to demonstrate scientific psychology to the public, featuring experimental stations where visitors could measure their reaction time, sensory acuity, memory, and other psychological variables.
This was a public education effort to establish the authority of scientific psychology over alternative approaches like mesmerism, spiritualism, and phrenology.

Key Figures in American Experimental Psychology

The emergence of American experimental psychology is marked by the contributions of William James, G. Stanley Hall, and James McKeen Cattell.

William James

William James (1842–1910) was a self-taught psychologist who taught the first psychology course at Harvard University in 1875.
He came from a privileged background and was exposed to art, literature, and philosophy.
In 1872, James began teaching physiology at Harvard and established a physiology lab in 1875.
James's most influential work, The Principles of Psychology, was published in 1890 after 12 years of work.
It served as a comprehensive overview of the field, similar to Wundt's Principles of Physiological Psychology.

Principles of Psychology

James’s Principles covered topics like consciousness, sensation, perception, memory, attention, imagination, emotion, and will.
Key Concept: Stream of Consciousness.
- James argued that consciousness is not composed of discrete units but flows continuously like a stream.
- He rejected elemental analyses of consciousness.
James integrated Darwinian ideas of adaptation and survival value into his psychology.
He posited that consciousness evolved to aid in human survival by enabling choices and appropriate responses to sensory input.
- Consciousness helps in filtering information and acting on it.
James emphasized the role of selective attention in navigating sensory overload.
Consciousness involves comparison, selection, and suppression of possibilities, shaping individual experiences.
Habit formation is crucial for both individual adaptation and social order.
- “Habit \text{ is thus the enormous fly-wheel of society, its most precious conservative agent. It alone is what keeps us all within the bounds of ordinance}”
  (James, 1890, v. 1, p. 121)
Habits are based on neural pathways, making them difficult to change.
- James advocated for establishing good habits.
James-Lange Theory of Emotion.
- James proposed that bodily changes follow the perception of a situation, and the recognition of these changes leads to the subjective feeling of emotion.
- This contrasts with the common view where subjective feeling precedes bodily changes.
- The theory remains influential due to its alignment with personal experiences of emotion.
James’s ideas influenced the development of functionalism, which seeks to understand the functions of consciousness.

Mary Whiton Calkins

Mary Whiton Calkins (1863–1930) was a student of William James who was not allowed to enroll officially at Harvard because of her gender.
She took James’s beginning psychology course, meeting in his home for instruction.
Despite completing all requirements for a doctorate, she was denied the degree by Harvard.
Established a psychology laboratory at Wellesley College in 1891, the first such lab founded by a woman.
Invented the paired associates method for studying memory, which is still used today.
Studied primacy and recency effects in memory.
Contributed to the understanding of retroactive interference.
Advocated for self-psychology, emphasizing the study of selves rather than consciousness or behavior.
Elected president of the American Psychological Association in 1905, the first woman to hold the position.

James as Philosopher

While influential in psychology, James shifted his focus to philosophy, particularly pragmatism.
Recruited Hugo Münsterberg to head the Harvard psychology lab in 1892.
James continued research in psychic phenomena, including spiritualism and mind cure, which was met with skepticism by his peers.
Believed in the potential of mental healing to alleviate suffering.

G. Stanley Hall and the Professionalization of Psychology

G. Stanley Hall (1844–1924) studied with William James at Harvard after being inspired by Wundt's work.
Opened the first psychology laboratory in America at Johns Hopkins University in 1883.
Founded the American Journal of Psychology in 1887, the first psychology journal in America.
Founded the American Psychological Association (APA) in 1892.
Initiated the Child Study Movement to apply psychology to education.
Started journals of applied psychology and religious psychology.
Invited Sigmund Freud to the United States in 1909 for his only visit.
Authored books on the psychology of aging and adolescence.
Hall moved to Clark University, where he established a second psychology laboratory in 1889.
He was more interested in administration and inspiring others than in laboratory research.

The Child Study Movement

The Child Study Movement was initiated by Hall to scientifically study children and improve education.
Focused on various aspects of child development, including sensory capabilities, memory, and attention span.
Hall utilized questionnaires to collect data on children’s minds.
The movement aimed to apply psychological findings to education and parenting.
Despite its ambitious goals, the movement was criticized for its lack of theoretical guidance and questionable research methods.
It contributed to the development of developmental and educational psychology and highlighted the need for norms in child development.

Adolescence and Hall’s Genetic Psychology

Hall’s most significant work was Adolescence: Its Psychology and Its Relations to Physiology, Anthropology, Sociology, Sex, Crime, and Religion (1904).
The book established adolescence as a distinct stage of development.
Hall’s genetic psychology was influenced by Darwin's ideas.
- Descriptions of developmental stages and their evolutionary benefits.
Hall adopted Haeckel’s theory of recapitulation, suggesting that individual development mirrors evolutionary ancestry.

Psychoanalysis, Religion, Aging

Hall was also known for his views on sex education and his interest in Freud’s psychoanalytic theories.
Hosted Freud at Clark University in 1909 for a conference that significantly influenced the growth of psychoanalysis in America.
Hall started a journal and mentored students in the psychology of religion.
Authored Jesus the Christ in the Light of Psychology (1917).
Published Senescence (1922), considered the first book on the psychology of aging.
Hall mentored Francis Cecil Sumner, the first African American to earn a PhD in psychology in 1920.

James McKeen Cattell: Psychology’s Ambassador

James McKeen Cattell (1860–1944) studied with Hall and Wundt.
Was greatly influenced by Francis Galton's anthropometric tests.
Established a psychology laboratory at the University of Pennsylvania in 1889.

Cattell’s Mental Tests

Coined the term “mental test” in his 1890 article “Mental Tests and Measurements.”
Developed a 10-test battery, including measures of sensory and motor abilities.
Cattell aimed to use these tests to assess students' aptitudes and progress.
- Believed the tests could also identify gifted students.
In 1894, he initiated a testing program for incoming students at Columbia University.
Clark Wissler's research in 1901 revealed that there was no correlation between Cattell’s mental tests and academic performance.
This negative result led to the decline of anthropometric mental testing.

Cattell as Editor of Science

Cattell founded two psychology laboratories, co-founded the Psychological Review, coined the term “mental test”, founded the Psychological Corporation, and founded/edited the American Men of Science volumes.
He became the owner and editor of the journal Science in 1894 and continued in that role for 50 years.
Cattell used his connections and skills to revive the failing journal and enhance its content.
Through Science, Cattell provided a platform for psychology, increasing its visibility within the scientific community.

Getting the Word out about a New Science

Early psychologists like James, Hall, and Cattell wrote articles for popular publications to promote the new science.
Joseph Jastrow organized the psychology exhibit at the Chicago World’s Fair and wrote popular books and a newspaper column on psychology.
The final decade of the ninteenth century was a time of considerable growth for psychology.
Significant figures such as Edward Titchener, Hugo Münsterberg, and Edward Scripture arrived in America, contributing to the diversity and development of psychology.
Lightner Witmer started the first psychology clinic in America.
The American Psychological Association was founded.
The influx of diverse perspectives and personalities shaped by American culture led to the emergence of different schools of thought within American psychology, including structuralism and functionalism.