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2010

Dawson, T. L., Goodheart, E. A., Draney, K., Wilson, M., & Commons, M. L.. (2010). Concrete, abstract, formal, and systematic operations as observed in a" Piagetian" balance-beam task series. Journal of applied measurement, 11, 11.

2009

Dawson, T. L., Goodheart, E. A., Draney, K., Wilson, M., & Commons, M. L.. (2009). Concrete, abstract, formal, and systematic operations as observed in a" Piagetian" balance-beam task series. Journal of applied measurement, 11, 11–23.

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