Please be mindful of the shortcomings of using the brief Big Five Measures. They have poor psychometric properties if you are using it for clinical research purposes. In general, the relibaility and validity of the short forms are not optimal. Best wishes.
Konstabel, K., Lönnqvist, J. E., Walkowitz, G., Konstabel, K., & Verkasalo, M. (2012). The ‘Short Five’(S5): Measuring personality traits using comprehensive single items. European Journal of Personality, 26(1), 13-29.
Rammstedt, B., & John, O. P. (2007). Measuring personality in one minute or less: A 10-item short version of the Big Five Inventory in English and German. Journal of research in Personality, 41(1), 203-212.
Lang, F. R., John, D., Lüdtke, O., Schupp, J., & Wagner, G. G. (2011). Short assessment of the Big Five: Robust across survey methods except telephone interviewing. Behavior research methods, 43(2), 548-567.
Article Short assessment of the Big Five: Robust across survey metho...
Please be mindful of the shortcomings of using the brief Big Five Measures. They have poor psychometric properties if you are using it for clinical research purposes. In general, the relibaility and validity of the short forms are not optimal. Best wishes.
I agree with JohnBosco. You want to have confidence in the validity and reliability of a measure, and this can be problematic in short forms. I utilised the Australian Personality Inventory (API) in my study. The API is a free measure of the big 5, containing 50 items, and is comparable with the NEO Five-Factor Inventory.
Rammstedt, B., & John, O. P. (2007). Measuring personality in one minute or less: A 10-item short version of the Big Five Inventory in English and German. Journal of research in Personality, 41(1), 203-212.
The problem which is often mentionned with shorts forms of questionnaire is the fact that short forms are unreliable, the reliability being associated with the number of items in a scale. However there is a way to overcome tis problem by using the functionnal method that i have created and where all the items of a test ars used to calculate the scores of each scales and so the reliability of the scores are those of the number of items of the test and not of the scales