References
- Acredolo , L. P. 1978 . Development of spatial orientation in infancy . Developmental Psychology , 14 : 224 – 234 .
- Bremner , J. G. 1978 . Egocentric versus allocentric spatial coding in nine month old infants: factors influencing the choice of code . Developmental Psychology , 14 : 346 – 355 .
- Butterworth , G. 1975 . Object identity in infancy: the interaction of spatial location codes in determining search errors . Child Development , 46 : 866 – 870 .
- Gratch , G. 1974 . Piaget's stage IV object concept error: evidence of forgetting or object concept . Child Development , 45 : 71 – 77 .
- Harris , P. L. 1973 . Perseverative errors in search by young infants . Child Development , 44 : 28 – 33 .
- Lecompte , G. K. and Gratch , G. 1972 . Violation of a rule as a method of diagnosing infant's levels of object concept . Child Development , 43 : 385 – 396 .
- Maury , L. 1980 . De ľobjet à ľespace: le probleme de “ľerreur de place” . Annee Psychologique , 80 : 221 – 235 .
- Maury , L. and Streri , A. 1981 . Recherche de ľobjet: modifications de réferences spatiales chez le bébé de 8 à 14 mois . Annee Psychologique , 81 : 51 – 67 .
- Piaget , J. 1937 . La construction du reel chez ľenfant , Neuchatel et Paris : Delachaux et Niestle .