Ten-Item Personality Inventory

Christopher Stewart
February 18th, 2015

Developing Data Products (Coursera DS Specialization)

Who are you?

  • This Shiny application administers a quick and effective personality inventory.

  • Simply rate yourself using 10 items and the app calculates your score on five personality scales: Extroversion, Agreeableness, Conscientiousness, Emotional Stability and Openness.

  • The app also provides a reference point for these scales drawn from a sample of 1813 participants.

How does it work?

  • For each scale, the inventory measures a positive and a negative dimension using Likert-type scales.

  • Negative items have to be reverse-scored, accomplished in the app using the “recode” function from the 'car' package.

  • Scores on these two items are then added together and divided by two.

require(shiny); require(car)
  observe({
    input$rawscores
    values$ext <- isolate ({
      (input$extraverted + 
        recode(input$reserved, "1 = '7'; 2 = '6'; 3 = '5'; 4 = '4'; 5 = '3'; 6 = '2'; 7 = '1'"))/(2)
    })
})

How do you stack up?

This measure is open domain, but also well-researched and normed. This bar chart shows mean scores for a sample of 1813 participants.

plot of chunk unnamed-chunk-2

Documentation

  • The Shiny application is available here.

  • The instrument used was developed at the University of Texas GozLab.

  • It has been used in a wide range of studies and is available in several formats and languages.