title: Differences between fa() and factanal() functions in R
body: <p>I'm performing an exploratory factor analysis on my dataset, composed of 23 variables (which are questions asked to people). I got 1777 observations for these variables and I would like to investigate the latent factors that can explain these variables. Therefore, I used first the function <code>fa()</code> and then I tried with the function <code>factanal()</code> which doesn't give the same results for which I have difficulties to interpret. </p>
  
  <p>Does anyone can explain me the differences between <code>fa()</code> and <code>factanal()</code> functions please?</p>