Skip to main content

Table 3 Factor loading matrix (n = 498)*.

From: Neurobehavioral effects of transportation noise in primary schoolchildren: a cross-sectional study

Test battery

Item

Factor I

Factor II

Factor III

Factor IV

NES

SRTT

0.743

   
 

Block_RT

0.764

   
 

Arrow_RT

0.769

   
 

Switch_RT

0.618

   
 

Block_f

  

0.631

 
 

Arrow_f

  

0.757

 
 

Switch_f

  

0.632

 
 

SDST

  

0.369

 
 

DMST_f

   

0.492

 

HECT

0.538

   

PP

Conceptual recall

 

0.922

  
 

Information recall

 

0.918

  
 

Recognition

 

0.675

  
 

CRIE

 

0.458

  
 

Working memory

   

0.682

 

Sustained attention

   

0.608

 

Prospective memory

   

0.469

Factor

Interpretation

Variance explained

Alpha**

I

Response speed and locomotion

20.3

0.76

II

Episodic memory and reading comprehension

15.1

0.77

III

Ability to switch and perceptual coding

10.8

0.58

IV

Memory and attention

6.5

0.42

Total

   

52.7

 
  1. * Per item only the highest loadings were presented; ** Cronbach's alpha (standardized), based on the items given in the factor loading matrix; this is a function of the item-inter-correlation and of the number of items included in the scale. Abbreviations: NES = Neurobehavioral Evaluation System; PP = Paper- and-pencil test.