Behavioural Data Science as the logical evolution of Behavioural Science. Conduct Data Science is a new, arising, interdisciplinary field, which consolidates strategies from the conduct sciences, like brain science, financial aspects, humanism, and business, with computational methodologies and Data analytics from software engineering, insights, information-driven designing, data frameworks examination and math, all to more readily show, comprehend and foresee conduct. Big data is a combination of structured, semi-structured and unstructured data collected by organizations that can be mined for information and used in machine learning projects, predictive modelling and other advanced data analytics applications Behavioural data science, aims to better model and predict behaviour, combines techniques from the behavioural sciences (psychology, sociology, economics, etc.) with a plethora of computational approaches ranging from the computer sciences, data-centric engineering, statistics, and more. All of these disciplines (in addition to many others) help inform behavioural data science to more sensibly understand human, algorithmic and systems behaviour in regard to increasing quantities of data.