Factor Analysis
 
Factor analysis refers to a family of 
techniques that either identify optimal linear combinations of variables that 
either (a) can stand in for the original variables, or (b) can explain the 
patterns of relations among the original variables. 
  
	
		
		Topics
        
          - Overview of factor analysis methodology
 
          - Principal components
 
          - Eigenvectors and eigenvalues
 
          - Principal component analysis and common factor 
          analysis
 
          - Loadings & scores
 
          - Communalities
 
          - Rotation
 
         
		Readings
        
          - Weller & Romney. Metric Scaling. 
          
 
         
      	FYA
		
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		Handouts
        
      	Data
        
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		Bibliography
 
		Classics 
		
			- Spearman, C. (1904).
			"General 
			intelligence," objectively determined and measured. American 
			Journal of Psychology, 15, 201-293. 
 
			- Thurstone, L. L. (1935). Vectors of the mind. 
			Chicago: University of Chicago Press. 
 
			- Thurstone, L. L. (1947). Multiple factor 
			analysis. Chicago: University of Chicago Press. 
 
			- Eckart, C. & Young, G. (1936). Approximation of 
			one matrix by another of lower rank. Psychometrika, 1, 211-218.
			
 
			- Hotelling, H. (1933). Analysis of a complex of 
			statistical variables into principal components. Journal of 
			Educational Psychology, 24, 417-441, 498-520. 
 
		 
		Other bibliographies 
		
			- Friendly. Annotated Factor Analysis Bibliography. 
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