The effect of nonindependence on significance testing in dyadic research
- 1 March 1995
- journal article
- Published by Wiley in Personal Relationships
- Vol. 2 (1) , 67-75
- https://doi.org/10.1111/j.1475-6811.1995.tb00078.x
Abstract
Relationship researchers regularly gather data from both members of the dyad, and these two scores are likely to be correlated. This nonindependence of observations can bias p values in significance testing if person is the unit in the statistical analysis. A method for determining how much bias results from dyadic interdependence is presented. Correction factors based on the degree of interdependence, design type, and the number of dyads are used to adjust the F statistic and its degrees of freedom to produce a corrected p value. Bias depends on the type of design and the degree of nonindependence, while the number of dyads in the study ordinarily has only a small effect on bias. Various strategies for controlling for nonindependence are briefly reviewed.Keywords
This publication has 17 references indexed in Scilit:
- Constituting Friendship in Talk and MetatalkJournal of Social and Personal Relationships, 1994
- Mutual Support in Mixed-Status RelationshipsJournal of Social and Personal Relationships, 1992
- Gender Differences in Relationship Awareness and Marital Satisfaction among Young Married CouplesPersonality and Social Psychology Bulletin, 1992
- Correlates of relationship satisfaction in cohabiting gay and lesbian couples: Integration of contextual, investment, and problem-solving models.Journal of Personality and Social Psychology, 1991
- Shyness and physical attractiveness in mixed-sex dyads.Journal of Personality and Social Psychology, 1991
- The Effects of Violations of Independence Assumptions in the One-Way ANOVAThe American Statistician, 1987
- Consequences of violating the independence assumption in analysis of variance.Psychological Bulletin, 1986
- Statistical analysis of dyadic social behavior.Psychological Bulletin, 1979
- Effects of social density in university residential environments.Journal of Personality and Social Psychology, 1976
- Effects of social density in university residential environments.Journal of Personality and Social Psychology, 1976