Human performance efficiency is only possible if one understand the influence of all relevant factors. To assess and/or predict performance, all exogenous (e.g., environmental and situational factors) and endogenous factors (e.g., memory, perception, response time, response duration, and physical characteristics) need to be taken into account. Only knowledge of all factors that influence a task will allow to understand how people interact with their environment. This information can be used to disseminate information useful for clients in need of information related to expert witness testimony, accident reconstruction, product development, and product safety. VanGemmert consulting provides comprehensive solutions based on advanced research for clients with theoretical and/or applied questions. Regardless of the complexity of the question, the personal attention provided will make sure that the solution and/or information is explained in simple and understandable language, so it will make sense to you.