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...Validating cattell s sixteen personality factor model with exploratory analysis abstract as one of the first uses raymond was a revolution in psychometrics paving way for contemporary measures such big five traits however more recent studies on conclusions have cast doubt validity due to its irreproducibility using questionnaire answers from individuals we used techniques developed by himself retrace and compared results validate his within maximum likelihood estimation get loadings chose factors then promax rotation differentiate chosen while many questions were categorized into they originally meant measure noticed same problems cited previous researchers namely grouping certain components general lack significance support others additionally also argue that patterns observed our might arisen participant bias data collection process itself test takers may responded based what thought measured background pf is popular self reported b has practical important applications working human ...