This was a thesis submitted to Iowa State University. I'm attaching a link to the thesis. Actually, Ms. Thornton did not develop her own personality questionnaire. She lifted items from the NEO-PI-R, a commercially published test authored by Costa & McCrae. I'm also giving you a link to the publisher. 

Her use of the items, without actually purchasing the test, was ethically and legally questionable. However, should you wish to do the same, she included all of the extraversion items in an appendix to her thesis. (Again, this is legally problematic, but it works for you if you want to go down the same route.) 

The Manual will, of course, provide complete scoring information. But it's pretty easy to determine which items are reverse-scored just by reading them. "I shy away from crowds of people" and "I wouldn't enjoy vacationing in Las Vegas," for example, are clearly reverse-scored, while "I often feel as if I am bursting with energy" and "I really enjoy talking to people" are not.

If you don't want to run afoul of copyright law, but also don't want to purchase a commercially published test, you still have options. One would be to use the IPIP extraversion scale. Personally, I'm not all that enamored of the IPIP scales, but many researchers are using them nowadays. See the link below.

http://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1172&context=rtd

http://www4.parinc.com/Products/Product.aspx?ProductID=NEO-PI-R

http://ipip.ori.org/

This was a thesis submitted to Iowa State University. I'm attaching a link to the thesis. Actually, Ms. Thornton did not develop her own personality questionnaire. She lifted items from the NEO-PI-R, a commercially published test authored by Costa & McCrae. I'm also giving you a link to the publisher. 

Her use of the items, without actually purchasing the test, was ethically and legally questionable. However, should you wish to do the same, she included all of the extraversion items in an appendix to her thesis. (Again, this is legally problematic, but it works for you if you want to go down the same route.) 

The Manual will, of course, provide complete scoring information. But it's pretty easy to determine which items are reverse-scored just by reading them. "I shy away from crowds of people" and "I wouldn't enjoy vacationing in Las Vegas," for example, are clearly reverse-scored, while "I often feel as if I am bursting with energy" and "I really enjoy talking to people" are not.

If you don't want to run afoul of copyright law, but also don't want to purchase a commercially published test, you still have options. One would be to use the IPIP extraversion scale. Personally, I'm not all that enamored of the IPIP scales, but many researchers are using them nowadays. See the link below.

http://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1172&context=rtd

http://www4.parinc.com/Products/Product.aspx?ProductID=NEO-PI-R

http://ipip.ori.org/

Thank You very much for the informations about the scale.

I have the same question about the 54-item Reflective Function Questionnaire(Fonagy et al., 2015). Are there any reversed-scored items? Thanks again !

Aikaterini Dardamani can you share the questionnaire on extraversion personality