psych

  1. N

    Question on William's method (Steiger Test)

    I am new to the forum, so first, a big hello to all! I have a question about William's method (comparison of correlation coefficients). I am running it in R with the 'psych' package. I can confidently compare correlation coefficients with each other and that is really cool for a baby R user...
  2. L

    Warning "The estimated weights for the factor scores are probably incorrect" in fa function (psych)

    Dear all, I recently posted this question in another website, reposting it here in case I get any answers. I'm relatively new to this, so maybe I don't include all the information necessary in order to solve this, or I should post it in another forum - please let me know in that case. Our...
  3. I'm-your-0

    The appropriate form of analysis / technique and terms?

    My assignment is to do the give the appropriate form of analysis / technique or term for a list of scenarios. I am lost on a few and would appreciate help with this one in particular. A psychology professor wanted to reduce test anxiety for her students. She wanted to know whether if day of...
  4. B

    Different value of Cronbach's alpha with psych and ltm packages and SPSS

    Hi, I'm trying to look at the internal consistency of a questionnaire consisting of 9 binary items. I mainly use SPSS, but am using R to determine McDonald's Omega coefficient using the omega() function in the "psych" package. The main output I get from the omega function is: Alpha...
  5. F

    Help in running package "psych"

    Hello! I need your help to run the package "psych" I download it but when I run > install.packages("psych") I get a message > install.packages("psych") The downloaded packages are in '/tmp/Rtmpry2wCg/downloaded_packages' It does not let me extract it either. :mad: Also, does anyone...