It is very likely that all major epidemiology texts involved in retrospective research are affected by recall bias. Scientists have identified recall errors that occur when the accuracy of recall regarding prior exposure is different for cases compared to controls (RAPHAEL, 1987). The possibility of recall errors exists whenever self-reported historical information is elicited from respondents (RAPHAEL, 1987). Therefore, the potential for emergence is likely to be greater in case-control studies or cross-sectional studies with retrospective elements, as well as in some prospective cohort and randomized control studies (Hassan, 2006). Since recall bias is an undesirable element, potentially distorting the study, the initial research study design must implement an adequate strategy. In project construction, an abstract, methods, and conclusions alone do not limit recall bias. To limit the need for withdrawal itself it would be more desirable to depend on scientific data, since it is the most obvious choice. However, research does not offer us this luxury. Therefore, one method to limit or exclude recall errors is the use of actual exposure status verified through unbiased recordings (RAPHAEL, 1987). Although this method is very limited as it depends on the unbiased documents made available in the studies. Initial formatting of questionnaires is another consideration to ensure research accuracy and scale validity. One popular form is the Minnesota Multiphasic Personality Inventory used in studies eliciting self-report responses (RAPHAEL, 1987). The MMPI has demonstrated positive results and limited recall bias with an analytical approach to cross-sectional studies. Since assertive measurements are in place to assess recall bias,…half the paper…has been assessed? The valuable status collected during the initial emergency room visit presents the most usable information for this study, making it reportable. Alcohol and drug use remain problematic globally and so epidemiological scientists continue to report research findings in hopes of communicating their findings and ultimately the overall goal of making a change for the better.. References; BORGES, g. L.-M. (2005). A CASE-CONTROL STUDY OF ALCOHOL AND SUBSTANCE USE DISORDERS AS RISK FACTORS FOR NON-FATAL INJURIES. Oxford Journals, 257-262. Hassan, E. (2006). Recall bias can pose a threat to retrospective and prospective research designs. . The Internet Journal of Epidemiology™ ISSN: 1540-2614 .RAPHAEL, K. (1987). Recall Bias: A proposal for evaluation and control. International Journal of Epidemiology , 167-171.