Judgement and decision-making lie at the heart of practice and are feats that practitioners perform under conditions that are complex and uncertain, the attainment of positive outcomes for service users dependent upon the aptitude of those charged with the task and the scaffolding provided by their employing organisations. Faced with such a challenge, social workers somehow avoid paralysis and take action to support and protect those with whom they work, drawing on experience, skill, information, and intervention evidence. The way they negotiate, orientate, interpret, and apply this knowledge is often through unconscious thought processes that require illumination and balance. This chapter considers how practitioners make sense of the situations that they come into contact with and discusses the intuitive-analytical reasoning continuum integral to this. Attention is given to the role of value as an influence upon perception and subsequent interpretation, together with the role played by cognitive processes.