An adaptation of the psychosocial model is the functional approach that deemphasized history and focused on clients' problem-solving ability. The term person-in-environment originated in this approach, and its goal is to determine a client's psychosocial diagnosis. 8-35) reviewed early assessment models, including the psychosocial model of Florence Hollis, Gordon Hamilton, and Helen Perlman. Several practice models have made an important contribution to social work assessment. An Integrative Skills Assessment Approach
