This doctoral dissertation explores the potential of Tiflodidactic Technologies to support learning in children, adolescents, and adults with visual impairments, with particular attention to spatial representations and the accessibility of educational environments. The term “Tiflodidactic Technologies” is proposed to refer to tools that are not simply compensatory aids nor merely generic educational technologies, but devices designed to structurally integrate tiflological needs, educational goals, and technological mediation. Within this framework, Spatial Explorer is developed and tested as a Tangible User Interface organized into 21 tasks targeting basic topological and directional concepts. In a pilot study with 15 blind or severely visually impaired children aged between 4 and 9 years, the total number of errors decreases on average from about 23.5 in the learning phase to 14.3 at pre-test and 7.1 at the final test, corresponding to an overall reduction of approximately 70% and large within-subject effect sizes. The pattern of results is stable across the entire age range, shows no substantial differences between males and females or between severe and total blindness, and is particularly pronounced in participants with additional disabilities, who start from the highest error levels yet exhibit the largest absolute gains. Task-level analysis confirms a hierarchy of difficulty consistent with the literature on congenital blindness: topological tasks are relatively easy from the outset, whereas allocentric tasks and those requiring a metric coding of distance remain more demanding, but are also those that benefit the most from training.
Questa tesi esplora il potenziale delle Tecnologie Tiflodidattiche per sostenere l’apprendimento di bambini, adolescenti e adulti con disabilità visiva, con particolare attenzione alle rappresentazioni spaziali e all’accessibilità dei contesti educativi. Viene proposto il termine “Tecnologie Tiflodidattiche” per indicare strumenti che non sono semplicemente ausili compensativi, né soltanto tecnologie educative generiche, ma dispositivi progettati per integrare in modo strutturale esigenze tiflologiche, obiettivi didattici e mediazione tecnologica. All’interno di questo quadro viene sviluppata e sperimentata Spatial Explorer, una Tangible User Interface organizzata in 21 task su concetti topologici e direzionali di base. In uno studio pilota con 15 bambini ciechi o ipovedenti gravi di età compresa tra 4 e 9 anni, il numero totale di errori passa in media da circa 23,5 nella fase di apprendimento a 14,3 al pre-test e 7,1 al test finale, con una riduzione complessiva di circa il 70% e effect size entro-soggetto di ampiezza elevata. Il pattern di risultati è stabile lungo l’intero range d’età, non mostra differenze sostanziali tra maschi e femmine o tra cecità grave e totale e risulta particolarmente marcato nei profili con pluridisabilità, che pur partendo dai livelli di errore più alti, evidenziano i risultati assoluti maggiori. L’analisi per singolo task conferma una gerarchia di difficoltà coerente con la letteratura sulla cecità congenita: i compiti topologici risultano relativamente agevoli fin dall’inizio, mentre i compiti allocentrici e quelli che richiedono una codifica metrica della distanza restano più impegnativi, ma sono anche quelli che beneficiano maggiormente del training.
Tecnologie Tiflodidattiche. Nuove vie di apprendimento nella didattica per disabili visivi / Paoletta, A.M.. - (2026 May 20). [10.14274/paoletta-amalia-maria_phd2026-05-20]
Tecnologie Tiflodidattiche. Nuove vie di apprendimento nella didattica per disabili visivi
PAOLETTA, AMALIA MARIA
2026-05-20
Abstract
This doctoral dissertation explores the potential of Tiflodidactic Technologies to support learning in children, adolescents, and adults with visual impairments, with particular attention to spatial representations and the accessibility of educational environments. The term “Tiflodidactic Technologies” is proposed to refer to tools that are not simply compensatory aids nor merely generic educational technologies, but devices designed to structurally integrate tiflological needs, educational goals, and technological mediation. Within this framework, Spatial Explorer is developed and tested as a Tangible User Interface organized into 21 tasks targeting basic topological and directional concepts. In a pilot study with 15 blind or severely visually impaired children aged between 4 and 9 years, the total number of errors decreases on average from about 23.5 in the learning phase to 14.3 at pre-test and 7.1 at the final test, corresponding to an overall reduction of approximately 70% and large within-subject effect sizes. The pattern of results is stable across the entire age range, shows no substantial differences between males and females or between severe and total blindness, and is particularly pronounced in participants with additional disabilities, who start from the highest error levels yet exhibit the largest absolute gains. Task-level analysis confirms a hierarchy of difficulty consistent with the literature on congenital blindness: topological tasks are relatively easy from the outset, whereas allocentric tasks and those requiring a metric coding of distance remain more demanding, but are also those that benefit the most from training.| File | Dimensione | Formato | |
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