![](/img/cover-not-exists.png)
Hypothesis Testing on a Proportional Reasoning Task by Children at Different Piagetian Stage Levels
Gruen, G. E., Offenbach, S. I., Keane, T.Volume:
9
Language:
english
Journal:
International Journal of Behavioral Development
DOI:
10.1177/016502548600900106
Date:
March, 1986
File:
PDF, 1.25 MB
english, 1986