方法对比

	Task-Centered Practice	Single-System Design
领域	Social Work	Social Work
方法族	Process / pipeline	Process / pipeline
起源年份	1972	2009
提出者	William J. Reid & Laura Epstein	Martin Bloom, Joel Fischer & John G. Orme (codification in social work)
类型	Short-term, structured, problem-solving practice model organized around client tasks	Time-series design for evaluating intervention with a single client system
开创性文献	Reid, W. J., & Epstein, L. (1972). Task-Centered Casework. Columbia University Press. ISBN: 9780231034661	Bloom, M., Fischer, J., & Orme, J. G. (2009). Evaluating Practice: Guidelines for the Accountable Professional (6th ed.). Pearson/Allyn & Bacon. ISBN: 9780205458066
别名	Task-Centered Casework, Task-Centered Model, Task-Centered Social Work, Reid-Epstein Task-Centered Approach	Single-Subject Design, Single-Case Design, N-of-1 Design, Single-System Evaluation
相关	4	4
摘要	Task-centered practice is a short-term, structured, problem-solving model of social-work intervention in which the worker and client identify a small number of specific target problems the client wants to address, agree on a time-limited contract, and then collaboratively develop and carry out concrete tasks to reduce those problems. Created by William Reid and Laura Epstein in 1972, it was one of the first social-work practice models built deliberately for empirical evaluation, and its emphasis on client-chosen problems, explicit tasks, and bounded time made it a foundation for evidence-based, accountable practice.	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.