References
- Bart , W. and Airasian , P. 1974 . Determination of the ordering among seven Piagetian tasks by an ordering-theoretical method . Journal of Educational Psychology , 66 : 277 – 284 .
- Green , M. 1979 . Structure and sequence in children's concepts of chance and probability: A replication study of Piaget and Inhelder . Child Development , 49 : 1045 – 1053 .
- Hays , W. 1973 . Statistics for the social sciences , 736 New York : Holt .
- Hensley , J. 1974 . An investigation of proportional thinking in children from grades six through twelve , University of Iowa . Unpublished doctoral dissertation
- Hoemann , H. W. and Ross , B. M. 1971 . Children's understanding of probability concepts . Child Development , 42 : 221 – 236 .
- Inhelder , B. and Piaget , J. 1958 . The growth of logical thinking: From childhood to adolescence , New York : Basic Books .
- Inhelder , B. and Piaget , J. 1964 . The early growth of logic , New York : Norton .
- Karplus , E. F. and Karplus , R. 1970 . Intellectual development beyond elementary school I: Deductive logic . School Science and Mathematics , 70 : 398 – 406 .
- Karplus , E. F. , Karplus , R. and Wollman , W. 1974 . Intellectual development beyond elementary school IV: Ratio, the influence of cognitive style . School Science and Mathematics , 74 : 476 – 482 .
- Karplus , R. and Karplus , E. F. 1972 . Intellectual development beyond elementary school III: Ratio, a longitudinal study . School Science and Mathematics , 72 : 735 – 742 .
- Karplus , R. and Peterson , R. W. 1970 . Intellectual development beyond elementary school II: Ratio, a survey . School Science and Mathematics , 70 : 813 – 820 .
- Lovell , K. 1961 . A follow-up study of Inhelder and Piaget's The growth of logical thinking . British Journal of Psychology , 52 : 145 – 153 .
- Piaget , J. and Inhelder , B. 1967 . The child's conception of space , New York : Norton .
- Piaget , J. and Inhelder , B. 1975 . The origin of the idea of chance in children , New York : Norton .
- Pumfrey , P. 1968 . The growth of the schema of proportionality . British Journal of Educational Psychology , 38 : 202 – 204 .
- Rubley , D. 1972 . An investigation of formal operational thought and dogmatism during the transition between adolescence and adulthood , University of Iowa . Unpublished doctoral dissertation
- Siegel , S. 1956 . Nonparametric statistics: For the behavioral sciences , New York : McGraw-Hill .
- Smedslund , J. 1963 . The concept of correlation in adults . Scandinavian Journal of Psychology , 4 : 156 – 173 .
- Wollman , W. and Karplus , R. 1974 . Intellectual development beyond the elementary school V: Using ratio in differing tasks . School Science and Mathematics , 74 : 593 – 611 .