Quantitative psychology is the branch of psychology that develops and applies the mathematical, statistical and psychometric methods used to measure psychological constructs and test psychological theories, including test construction, research design and the statistical models used across the rest of the field. Psychometrics, the theory and technique of psychological measurement, is one specialized method quantitative psychologists develop and use, not a separate, unrelated discipline.
Facts
Central QuestionWhat statistical and measurement methods allow psychological constructs, such as intelligence, personality or attitudes, to be measured validly and their relationships tested rigorously? 1 Key DebateWhether psychology's replication crisis reflects fixable methodological and statistical practices or points to deeper problems in the field's underlying theories remains contested; failed replications have triggered sharp disagreement between replication researchers and the original study authors. 2 Quantitative Psychology
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Includes
Source Anne Anastasi (Wikipedia)
Source Wikipedia: Brian Nosek
Source Charles Spearman (Wikipedia)
Source Wikipedia: Common-Method Variance
Source Georg Rasch (Wikipedia)
Source Wikipedia: Psychometrics
Additional Source Wikipedia: Quantitative PsychologyLead section
Source Wikipedia: Replication crisis
Source Wikipedia: Replication crisis
Sources
1. Wikipedia: Quantitative Psychology
Wikimedia FoundationLead sectionQuote, Lead section
Quantitative psychology is a field of scientific study that focuses on the mathematical modeling, research design and methodology, and statistical analysis of psychological processes.
2. Wikipedia: Replication crisis
WikipediaHistory section
These replication failures triggered intense disagreement between replication researchers and the original authors.
Includes: Reproducibility Project: Psychology, Reproducibility Project scope section
Coordinated by psychologist Brian Nosek, researchers redid 100 studies in psychological science from three high-ranking psychology journals
Includes: Replication Crisis, Publication bias section
Publication bias-the tendency to publish only positive, significant results-creates the "file drawer effect", where negative results remain unpublished.
View the Source Wikipedia: Brian Nosek
Wikimedia FoundationIncludes: Brian Nosek, Work sectionQuote, Includes: Brian Nosek, Work section
In 2011, Nosek and his collaborators set up the Reproducibility Project, with the aim of trying to replicate the results of 100 psychological experiments published in respected journals in 2008.
Wikipedia: Psychometrics
Wikimedia FoundationIncludes: Psychometrics, Article leadQuote, Includes: Psychometrics, Article lead
Psychometrics is a field of study within psychology concerned with the theory and technique of measurement.
Georg Rasch (Wikipedia)
Includes: Georg Rasch, Article leadQuote, Includes: Georg Rasch, Article lead
Georg William Rasch () (21 September 1901-19 October 1980) was a Danish mathematician, statistician, and psychometrician, most famous for the development of a class of measurement models known as Rasch models.
Wikipedia: Common-Method Variance
Wikimedia FoundationIncludes: Common-Method Variance, Article categories: PsychometricsView the Source Anne Anastasi (Wikipedia)
Includes: Anne Anastasi, Lead sectionQuote, Includes: Anne Anastasi, Lead section
Anne Anastasi (December 19, 1908 - May 4, 2001) was an American psychologist best known for her pioneering development of psychometrics.
Charles Spearman (Wikipedia)
Includes: Charles Spearman, Lead sectionQuote, Includes: Charles Spearman, Lead section
Charles Edward Spearman, FRS (10 September 1863 - 17 September 1945) was an English psychologist known for work in statistics, as a pioneer of factor analysis, and for Spearman's rank correlation coefficient.
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