Validity concerns about questionnaire, research article ect...see the full question. In APA Format please.

Appendix A of this article contains the questionnaire on racial profiling that was used for this research. What issues of validity concern you about this questionnaire? What issues of validity concern you about the research article? What questions should have been asked that were omitted? If you were to conduct this research, what would be different? Be detailed in your answer.

The article is Barlow, D., & Barlow, M. (2002). Racial Profiling: A Survey of African American Police Officers. Police Quarterly, 5(3), 334-358. http://dx.doi.org/10.1177/109861102129198183