Using Conversation Analysis to Explore Assessments of Decision-Making Capacity in a Hospital Setting

Background: Healthcare professionals (HCPs) have a responsibility to conduct assessments of decision-making capacity that comply with the Mental Capacity Act 2005 (MCA). Current best-practice guidance, such as the Mental Capacity Code of Practice and National Institute for Health and Care Excellence decision-making and mental capacity guidance, does not stipulate how to accomplish this in practice, for example, what questions should be asked, how options and information should be provided. In addition, HCPs struggle to assess the capacity of individuals with communication difficulties. Aims: This study was a service evaluation that aimed to objectively analyse, using Conversation Analysis (CA), how real-life capacity assessments were conducted in a hospital setting with patients with acquired brain injury (ABI)-related communication difficulties. A second aim was to establish the feasibility of using CA to advance knowledge of the conduct of capacity assessment. Methods & Procedures: Four naturally occurring capacity assessments were video-recorded. Recordings involved speech and language therapists, occupational therapists, neuropsychologists and patients with communication difficulties as a result of ABI. The methods and findings of CA were used to investigate the interactional behaviours of HCPs and patients during assessments of decision-making capacity. The analysis was informed by our knowledge of the MCA best practice guidance. Outcomes & Results: An overall structure of capacity assessment that enacted some of the best-practice MCA guidance was identified in one recording, consisting of six phases: (i) opening, (ii) preparation, (iii) option-listing, (iv) test, (v) decision, and (vi) close. The preparation phase consisted of two sub-components: information gathering and information giving. Variation from this structure was observed across the dataset, notably in the way in which options were (or were not) presented. Conclusions & Implications: CA is a feasible empirical method for exploring the structure and conduct of capacity assessments. CA identifies and provides ways of describing interactional behaviours that align with and diverge from best-practice MCA guidance. Future CA studies including a wider range of health and social care professionals and patients have the potential to inform evidence based training for HCPs who conduct assessments of decision-making capacity.