Format

Send to

Choose Destination
Perspect Psychol Sci. 2015 Jan;10(1):37-59. doi: 10.1177/1745691614556682.

Candidate gene-environment interaction research: reflections and recommendations.

Author information

1
Department of Psychiatry, Virginia Commonwealth University ddick@vcu.edu.
2
Department of Psychiatry, Washington University in St. Louis.
3
Institute for Behavioral Genetics, University of Colorado Boulder.
4
Department of Psychiatry, Virginia Commonwealth University.
5
Department of Psychology, University of Notre Dame.
6
Department of Psychological Sciences, University of Missouri.

Abstract

Studying how genetic predispositions come together with environmental factors to contribute to complex behavioral outcomes has great potential for advancing the understanding of the development of psychopathology. It represents a clear theoretical advance over studying these factors in isolation. However, research at the intersection of multiple fields creates many challenges. We review several reasons why the rapidly expanding candidate gene-environment interaction (cG×E) literature should be considered with a degree of caution. We discuss lessons learned about candidate gene main effects from the evolving genetics literature and how these inform the study of cG×E. We review the importance of the measurement of the gene and environment of interest in cG×E studies. We discuss statistical concerns with modeling cG×E that are frequently overlooked. Furthermore, we review other challenges that have likely contributed to the cG×E literature being difficult to interpret, including low power and publication bias. Many of these issues are similar to other concerns about research integrity (e.g., high false-positive rates) that have received increasing attention in the social sciences. We provide recommendations for rigorous research practices for cG×E studies that we believe will advance its potential to contribute more robustly to the understanding of complex behavioral phenotypes.

KEYWORDS:

G×E; candidate genes; genetics; gene–environment interaction

PMID:
25620996
PMCID:
PMC4302784
DOI:
10.1177/1745691614556682
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Atypon Icon for PubMed Central
Loading ...
Support Center