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. Author manuscript; available in PMC: 2013 Apr 1.
Published in final edited form as: J Exp Child Psychol. 2012 Jan 3;111(4):607–628. doi: 10.1016/j.jecp.2011.12.001

Table 2.

Distinctions between Larger Investigation and the Present Study

Larger investigation Present study
Time Frame
     Weeks 1–17 Weeks 8–13
Content of WP Intervention
     Introductory unit (weeks 1–2)
     Combine problem unit (weeks 3–7)
     Compare problem unit (weeks 8–13) Compare problem unit (weeks 8–13)
     Change problem unit (weeks 14–17)
Measures
     Mix of combine, compare, and change problems Compare problems with greater sampling of subtypes
Relational understanding
Data Collection
     Pretesting: before week 1 Pretesting: after week 7
     Pretesting: before week 1 Posttesting: after week 13