Branches of Psychology
Quantitative Psychology
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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 Cross-Tradition Connections
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 sectionQuote, History section
These replication failures triggered intense disagreement between replication researchers and the original authors.
2. Wikipedia: Replication crisis
WikipediaIncludes: Reproducibility Project: Psychology, Reproducibility Project scope sectionQuote, 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
2. Wikipedia: Replication crisis
WikipediaIncludes: Replication Crisis, Causes section, publication biasQuote, Includes: Replication Crisis, Causes section, publication bias
Publication bias—the tendency to publish only positive, significant results—creates the 'file drawer effect', where negative results remain unpublished.
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.
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