Leadership style and job satisfaction:the comparison of steowise regression with ridge regression

Subject Areas : روان درمانگری

Hamid R.  Oreizie ¹ (PhD Isfahan University)
Mohsen  Golparvar ² (PhD Islamic Azad University Khorasgan Branch)

Received: 2015-06-05 Accepted : 2015-06-05 Published : 2009-09-23

Keywords: stepwise regression, Leadership Style, job satisfacation, ridge regressoion,

Abstract :

This research compared the usage of stepwise and ridge regression models in the field of industrial psychology when independent variables are correlated. Three hundred twenty nine randomly chosen industrial men personnels of Isfahan completed the Manager’s Leadership Style Questionnaire (Gerstner & Day, 1994) and the Job Satisfacation Questionnaire (Brayfield & Rothe, 1951). According to the results of stepwise regression analysis, the managers’ emphasis on the “grievance investigation” was the only factor that predicted job satisfaction among personnels (
= 0.84, P<0.05). However, the results of ridge regrssion analysis demonstrated that besides grievance investigation, learning significance and perceived organizational justice also predicted job satisfaction (respectively
=0.6, P<0.05;
=0.2, P<0.05;
=0.2, P<0.01). Although the explained vairance based on stepwise regression (R2 =0.7) is more than that based on the ridge regression (R2 =0.6), the results derived from this method seems to be more realistic because of accounting the multiple collinearity.