Related Experiment Video
Updated: Jul 12, 2026

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Problem-Solving Before Instruction (PS-I): A Protocol for Assessment and Intervention in Students with Different Abilities
Published on: September 11, 2021
Assessing mediation: the necessity of theoretical considerations
Danella Hafeman1, Sharon Schwartz
1Columbia University, New York, NY, USA. dmh2002@columbia.edu
Preventive Medicine
|August 28, 2007
Summary
No abstract available in PubMed .
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