References
- Berninger , V.W. 1988 . Development of operational thought without a normal sensorimotor stage . Intelligence , 12 : 219 – 230 .
- Brekke , B. , Johnson , L. and Williams , J.D. 1975 . Conservation of weight with the motorically handicapped . Journal of Special Education , 9 (4) : 389 – 393 .
- Cioni , G. , Paolicelli , P.B. , Sordi , C. and Vinter , A. 1993 . Sensorimotor development in cerebral‐palsied infants assessed with the Uzgiris‐Hunt Scales . Developmental Medicine and Child Neurology , 35 : 1055 – 1066 .
- Goodman , L.A. 1959 . Simple statistical methods for scalogram analysis . Psychometrika , 24 : 29 – 43 .
- Jordan , N. 1972 . Is there an Achilles’ heel in Piaget's theorising? . Human Development , 15 : 379 – 382 .
- Lister , C. 1990 . The Piagetian method of critical exploration in understanding special educational needs . European Journal of Special Needs Education , 5 (3) : 179 – 188 .
- Lister , C. , Leach , C. and Udberg , L. 1991 . The development of understanding of quantity in children with cerebral palsy, part II . Early Child Development and Care , 74 : 29 – 37 .
- Lister , C. and Udberg , L. 1991 . The development of understanding of quantity in children with cerebral palsy . Early Child Development and Care , 71 : 1 – 11 .
- Meyers , L.S. , Coleman , C.L. and Morris , L.M. 1982 . Conservation training of three cerebral palsied children . Bulletin of the Psychonomic Society , 20 (1) : 14 – 16 .
- Piaget , J. 1952 . The Child's Conception of Number , New York : Humanities .
- Piaget , J. 1970 . “ Piaget's Theory ” . In Carmichael's Manual of Child Psychology , Third Edition , Edited by: Mussen , P.H. Volume 1 , New York : John Wiley and Sons .
- Piaget , J. and Inhelder , B. 1941 . Le developpement des quantites physiques chez l'enfant , Neuchatel : Delachaux et Niestle .
- Piaget , J. , Inhelder , B. and Szeminska , A. 1960 . The Child's Conception of Geometry , London : Routledge and Kegan Paul .
- Rothman , J.G. 1987 . Understanding order of movement in youngsters with cerebral palsy . Perceptual and Motor Skills , 65 : 391 – 397 .
- Rothman , J.G. 1989 . Understanding of conservation of substance in youngsters with cerebral palsy . Physical and Occupational Therapy in Pediatrics , 9 (3) : 119 – 125 .