Secondary research is also important because it will validate the survey’s profiling practices and enrich knowledge about racial profiling issues across the country. Qualitative and quantitative data-collection methods will also answer RQ2. The survey will have open-ended questions about what the police think about racial profiling and how they can include it in criminal profiling without sacrificing the validity and reliability of profiling methods and findings. An interview with a criminology or criminal justice professor will also be essential in understanding academic ideas on offender profiling validity and reliability.
The populations under study are the police and criminology/criminal justice professors and the sampling method is convenience sampling because of its advantages over other methods. Convenience sampling is an advantageous method because it is an easy, cost- and time-efficient method for selecting respondents (Maxfield & Babbie, 2011, p. 224). Its economy ensures that the study will not create an undue financial burden on the researcher. Furthermore, another advantage of convenience sampling is that the researcher can choose participants who are willing to respond and who possess skills and knowledge in answering pertinent survey and interview questions. Convenience sampling has its disadvantages, however. Because it is a non-probability sampling method, it may find respondents who might not be representative of the general population (Gravetter & Forzano, 2012, p. 151). The resulting sampling may be biased because the researcher cannot ensure the randomness of the selection process (Gravetter & Forzano, 2012, p. 151). This major drawback can be managed, nonetheless, through finding reasonable representatives (Gravetter & Forzano, 2012, p. 151). For example, random sampling is still applied to a chosen police unit. This action will help improve the generalization of the findings to the police.