1. To carry out specialist psychological assessments of clients referred to the service, based upon the appropriate use, interpretation and integration of complex psychological data from a variety of sources including psychological and neuropsychological tests, self-report measures, rating scales, direct and indirect structured observations and semi-structured interviews with clients, family members and others involved in the clients care, in order to reach a psychological formulation of the clients difficulties. 2. To formulate and implement plans for the formal psychological treatment and/or management of a clients mental health problems, based upon an appropriate conceptual framework of the clients problems, and employing methods based upon evidence of efficacy, across the full range of care settings. 3. To be responsible for implementing a range of psychological interventions for individuals, carers, families and groups, within and across teams employed individually and in synthesis, adjusting and refining psychological formulations drawing upon different explanatory models and maintaining a number of provisional hypotheses. 4. To provide specialist assessments of clients presenting with cognitive impairment due to a variety of causes or organic conditions, including pre-assessment counselling and neuropsychological and functional assessments, and to be able to adjust psychological interventions to work effectively with people presenting with complex needs due to cognitive impairment and organic disorders. 5. To evaluate and make decisions about treatment options taking into account both theoretical and therapeutic models and complex factors concerning historical and developmental processes that have shaped the individual, family or group.