The following table includes the results of the psychometric tests of the Sieloff-King Assessment of Group Power within Organizations.

 

PSYCHOMETRIC ANALYSIS

 

Sieloff

1996

 

Sieloff

1999

Sieloff & Dunn,

2003

Content Validity Index (CVI)

87.4%

ten judges

91.7%

I. King

N/A

Number of Subjects

206

334

350

Reliability

  Cronbach’s alpha

 

Split Half

Method, equal

length

Spearman

Brown

Correction

Formula

 

0.91

 

 

0.76

 

0.92

 

 

0.92

 

N/A

Validity

Twenty-six    

Nursing

Questions of the

  Criterion

 

0.49

 

p < 0.01

 

0.625

 

p < 0.01

 

N/A

Confirmatory Factor Analysis

 

Fit Indices for final alternate model with ten items eliminated from the SKAGPO

 

 

 

 

c² = 504.7

 

df  = 291

 

p < .00

 

Goodness of Fit Index =.9

 

Normed Fit

Index = .86

 

Incremental Fit Index =.94

 

Comparative Fit Index = .94

 

Root Mean Square Error of Approximation = .05