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Table 4 Factor Loadings of CALLS Test

From: Validation of the Cognitive Assessment of Later Life Status (CALLS) instrument: a computerized telephonic measure

Rotated Component Matrix(a)      
  Verbal Learning & Memory Processing Speed Attention and Working Memory Verbal Fluency and Naming Concept Formation
Alpha 0.883 0.731 0.555 0.457 0.179
Word List Trial 1 0.592     
Word List Trial 2 0.767     
Word Recognition 0.774     
Word List Trial 3 0.792     
Word List Cued Recall (Total) 0.829     
Word List Delayed Free Recall 0.834     
Choice RT Score Decile   0.559    
Simple RT Right Score Decile   0.865    
Simple RT Left Score Decile   0.893    
DATE Score    0.373   
Digit Span Backward (Span)    0.784   
Digit Span Forward (Span)    0.804   
President/VP Naming     0.799  
F Words (30 Seconds)     0.504  
Animal Naming (30 seconds)     0.456  
Serial 7's     0.496  
4 Word Naming      0.745
Similarities      0.732
  1. Note: The extraction method was a Principal Component Analysis. The rotation method was Varimax with Kaiser Normalization. Rotation converged in 6 iterations. The CALLS Total coefficient alpha = 0.809. Choice RT = Choice Reaction Time; Simple RT = Simple Reaction Time.