How Replicable Are Links Between Personality Traits and Consequential Life Outcomes? The Life Outcomes of Personality Replication Project

The Big Five personality traits have been linked to dozens of life outcomes. However, metascientific research has raised questions about the replicability of behavioral science. The Life Outcomes of Personality Replication (LOOPR) Project was therefore conducted to estimate the replicability of the...

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Bibliographic Details
Published in:Psychological science Vol. 30; no. 5; pp. 711 - 727
Main Author: Soto, Christopher J.
Format: Journal Article
Language:English
Published: Los Angeles, CA Sage Publications, Inc 01.05.2019
SAGE Publications
SAGE PUBLICATIONS, INC
Subjects:
Adolescent
Adult
Behavioral sciences
Behavioral Sciences - methods
Female
Five factor model
Humans
Life
Literature
Male
Personality
Personality - physiology
Personality Disorders - psychology
Personality Inventory - statistics & numerical data
Personality traits
Reproducibility
Research Article
Sample Size
Statistical power
Surveys and Questionnaires - standards
United States - epidemiology
Young Adult
United States
replication
Big Five
preregistered
open materials
life outcomes
personality traits
open data
metascience
ISSN:0956-7976, 1467-9280, 1467-9280
Online Access:Get full text
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Summary:The Big Five personality traits have been linked to dozens of life outcomes. However, metascientific research has raised questions about the replicability of behavioral science. The Life Outcomes of Personality Replication (LOOPR) Project was therefore conducted to estimate the replicability of the personality-outcome literature. Specifically, I conducted preregistered, high-powered (median N = 1,504) replications of 78 previously published trait–outcome associations. Overall, 87% of the replication attempts were statistically significant in the expected direction. The replication effects were typically 77% as strong as the corresponding original effects, which represents a significant decline in effect size. The replicability of individual effects was predicted by the effect size and design of the original study, as well as the sample size and statistical power of the replication. These results indicate that the personality-outcome literature provides a reasonably accurate map of trait–outcome associations but also that it stands to benefit from efforts to improve replicability.
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ISSN:0956-7976
1467-9280
1467-9280
DOI:10.1177/0956797619831612