| neuro_cat | R Documentation |
Cat object containing item parameters for graded response model fit with responses to the 20-item Neuroticism dimension of the 100-item IPIP representation of Costa and McCrae's Five Factor Model
data(neuro_cat)
An object of class Cat of length 1.
Cat object containing item parameters for graded response model fit with 774,410 response profiles by myPersonality Project and 1500 response profiles collected by YouGov in June 2018. The sample from myPersonality Project was a convenience sample, and the respondents from YouGov were matched to a sampling frame on gender, age, race, and education.
See Cat-class for details regarding the Cat object structure.
See grmCat for details regarding the graded response model.
A normal prior was chosen with mean from the theta estimates from the YouGov sample (-.025) and a standard deviation (1.2) wide enough to envelope the range of estimated theta values across both samples.
Note that due to how the item parameters were estimated, large, positive values indicate "more" of the latent trait.
Response options are 1=Very inaccurate; 2=Moderately inaccurate; 3=Neither inaccurate nor accurate; 4=Moderately accurate; 5=Very accurate.
The wording of the question items:
I...
q12Often feel blue.
q30Dislike myself.
q80Am often down in the dumps.
q70Have frequent mood swings.
q50Panic easily.
q90Am filled with doubts about things.
q100Feel threatened easily.
q17Get stressed out easily.
q40Fear for the worst.
q60Worry about things.
q37Seldom feel blue.
q11Feel comfortable with myself.
q67Rarely get irritated.
q19Am not easily bothered by things.
q97Am very pleased with myself.
q27Am relaxed most of the time.
q77Seldom get mad.
q47Am not easily frustrated.
q87Remain calm under pressure.
q57Rarely lose my composure.
See https://dataverse.harvard.edu/dataverse/pdsl for the raw YouGov and/or Qualtrics data.
Costa, P. T., Jr., & McCrae, R. R. (1992). Revised NEO Personality Inventory (NEO PI-R) and NEO Five-Factor Inventory (NEO-FFI): Professional manual. Odessa, FL: Psychological Assessment Resources.
Stillwell, David, and Michal Kosinski. 2007. "myPersonality Project." https://sites.google.com/michalkosinski.com/mypersonality
Cat-class, grmCat
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