方法对比

	Single-System Design	Task Analysis (Social Work)
领域	Social Work	Social Work
方法族	Process / pipeline	Process / pipeline
起源年份	2009	1992
提出者	Martin Bloom, Joel Fischer & John G. Orme (codification in social work)	William J. Reid & Laura Epstein (task-centered practice)
类型	Time-series design for evaluating intervention with a single client system	Qualitative procedure for decomposing a goal into sequenced, accomplishable tasks
开创性文献	Bloom, M., Fischer, J., & Orme, J. G. (2009). Evaluating Practice: Guidelines for the Accountable Professional (6th ed.). Pearson/Allyn & Bacon. ISBN: 9780205458066	Reid, W. J. (1992). Task Strategies: An Empirical Approach to Clinical Social Work. Columbia University Press. ISBN: 9780231076876
别名	Single-Subject Design, Single-Case Design, N-of-1 Design, Single-System Evaluation	Task-Centered Task Analysis, Task Implementation Sequence Analysis, Reid Task Analysis, Task Breakdown Analysis (Social Work)
相关	4	3
摘要	A single-system design is a time-series approach to evaluating practice in which a single client system — an individual, family, group, or organization — is measured repeatedly on a clearly defined target before and during (and sometimes after) an intervention. By tracking the same system over time rather than comparing a treatment group to a control group, it lets a practitioner judge whether their own intervention is associated with change in the people they actually serve. It is the methodological backbone of the 'accountable professional' tradition codified by Bloom, Fischer, and Orme.	In task-centered social work, task analysis is the qualitative procedure of breaking a client's agreed-upon goal into a sequence of concrete, accomplishable tasks, then examining what helps and hinders the completion of each. Rooted in William Reid and Laura Epstein's task-centered model, it turns a large or vague problem into a chain of small, reviewable actions for the client and worker, and treats the success or failure of each task as data for refining the plan. It is both a planning device and an analytic lens on the change process.