Compare methods

	Celeration Line Analysis	Visual Analysis of Single-Case Data
Field	Social Work	Social Work
Family	Process / pipeline	Process / pipeline
Year of origin	1972	2010
Originator	Owen R. White & the precision-teaching tradition; codified for social work by Bloom, Fischer & Orme	Applied behavior analysis tradition; codified by Kratochwill et al. (What Works Clearinghouse)
Type	Trend-line procedure for projecting baseline trend into the intervention phase	Structured graphical judgment of intervention effect in single-case time-series data
Seminal source	Kazdin, A. E. (2011). Single-Case Research Designs: Methods for Clinical and Applied Settings (2nd ed.). Oxford University Press. ISBN: 9780195341881	Kratochwill, T. R., Hitchcock, J., Horner, R. H., Levin, J. R., Odom, S. L., Rindskopf, D. M., & Shadish, W. R. (2010). Single-Case Designs Technical Documentation. What Works Clearinghouse, U.S. Department of Education.
Aliases	Celeration Line, Split-Middle Method, Trend Line Analysis (Single-Case), Celeration Approach	Visual Inspection of Single-Case Data, Single-Case Visual Analysis, Graphical Analysis of Single-Subject Data, Visual Analysis of Time-Series Graphs
Related	4	4
Summary	Celeration line analysis is a single-case method that fits a trend line to the baseline phase, projects that line forward into the intervention phase, and judges effect by how many intervention data points fall on the improvement side of the projected trend. Built on Owen White's split-middle technique from precision teaching and codified for social-work practice by Bloom, Fischer, and Orme, it directly addresses a weakness of level-only comparisons: it asks whether the client improved beyond the trajectory the baseline was already on, and pairs the count with a simple binomial test for statistical decision-making.	Visual analysis is the primary method for judging whether an intervention produced an effect in single-case and single-system designs: the data are plotted as a time series across baseline and intervention phases and read systematically for changes in level, trend, variability, immediacy of effect, overlap between phases, and consistency across similar phases. Rooted in applied behavior analysis and codified by the What Works Clearinghouse single-case standards, it treats the graph itself as the evidence and reserves the label 'effect' for changes that are clear, replicated within the design, and unlikely to reflect ordinary fluctuation.