Discriminant Function Analysis

[Video of DFA Analysis~9 minutes]

    Five subscales on the Work Addiction Risk Test (WART) (i.e., Compulsive Tendencies, Control, Impaired Communication/Self-Absorption, Inability to Delegate, and Self-Worth) were used to predict workaholics and nonworkaholics (GROUP variable; 1=workaholic, 2=nonworkaholic).


 [Download Data Here]

   

Go to the Classification option

Discriminant

Analysis 1

Summary of Canonical Discriminant Functions

Classification Statistics


 Results 

    A discriminant function analysis was used to predict workaholic/nonworkaholics from the five subscales on the WART (i.e., Compulsive Tendencies, Control, Impaired Communication/Self-Absorption, Inability to Delegate, and Self-Worth). The five subscales were the independent variables and group membership (workaholic and nonworkaholic) was the dependent variable. A statistically significant function was calculated (Wilks' Lambda=.62, c2(5)=210.13, p<.001) with a canonical correlation of .62. The standardized canonical discriminant function coefficients and structure matrix are reported in Table 1. The most important subscales for separating the groups, as indicated by a structure coefficient greater than .50, were Compulsive Tendencies, Impaired Communication/Self-Absorption, and Control. The workaholic group was classified as workaholics in 77.1% of the cases and 85.3% of the control group was classified as non-workaholics resulting in 83.4% correct classification rate.

Table 1

The Canonical Discriminant Function  and Structure Coefficients of the WART Subscales Predicting Workaholics/Nonworkaholics

Factor

Canonical

Structure

 

 

 

Compulsive Tendencies
 

.69 .90

Control
 

.25 .68

Impaired Communication/Self-Absorption
 

.32 .60

Inability to Delegate
 

.13 .28

Self-Worth

-.22

.14

Conclusion

    The discriminant function was statistically significant and the classification rate of workaholics (83.4%) was greater than chance suggesting a strong association between groups and the predictors.  The subscales of Compulsive Tendencies, Control, and Impaired Communication were the most important variables for discriminating between workaholics and the control group. Workaholics tended to have higher scores on Compulsive Tendencies, Control, and Impaired Communication than those individuals not classified as workaholics.