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Abbreviated Interrupted Time‐Seri
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The effect can be a change in inter
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The effect can be a change in slope
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The effect can be delayed in time.
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Interrupted Time Series Can Provide
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Meeting ITS Conditions in Education
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• O X O Theoretical Rationales fo
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O O O X O • Initial standing asse
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Threats to Validity: History • Wi
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Threat to SCV • When a treatment
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External Validity • The essence o
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O X O O O • Now we add a comparis
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O O O X O O O O O • Now mean diff
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Results: Percent of Students Obtain
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Adding a nonequivalent dependent va
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Note that the outcome variable (ope
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Only the targeted dependent variabl
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Example: Evaluating No Child Left B
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Contrast Type 1 & 2 • Contrast 1:
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Hypothetical NCLB effects on public
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Analytic Model • NCLB Public vs.
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Main NAEP 4 th grade math scores by
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Difference in differences in Total
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Main NAEP 8 th grade math scores by
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Trend NAEP Time Series Graphs Publi
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Trend NAEP 8 th grade math scores b
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Public vs Private School Findings
- Page 55 and 56: Contrast 2: Comparing States that v
- Page 57 and 58: Evidence of Differing Standards Hig
- Page 59 and 60: Main NAEP Time Series Graphs States
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- Page 63 and 64: Main NAEP 4 th grade math scores by
- Page 65 and 66: Difference in differences in 2009 T
- Page 67 and 68: Overall Conclusions • Similar res
- Page 69 and 70: Basic Insight of D & J • NCLB pas
- Page 71 and 72: D & J Results: 4 th Grade Math
- Page 73 and 74: Dee and Jacob Results • Similar c
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- Page 83 and 84: Example: Chorpita • A child with
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- Page 90 and 91: Multilevel Models: Current Work •
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- Page 96 and 97: Level 2 data: Persons Level-2 data
- Page 98 and 99: HLM: Linear Model Estimates Final e
- Page 100 and 101: HLM Output from Quadratic Model: Fi
- Page 102 and 103: So Simple: What Could Go Wrong? •
- Page 104 and 105: Problematically • Different combi