[1] CNR, Inst Educ Technol, Via Marini 6,Torre Francia, Genoa, Italy
[2] Giustino Fortunato Univ, Benevento, Italy
[3] Fdn Bambini & Autismo Onlus, I-33170 Pordenone, Italy
[4] Univ Parma, Dept Humanities Social Sci & Cultural Ind, Borgo Carissimi 10, I-43121 Parma, Italy
[5] Univ Parma, Dept Med & Surg, Parma, Italy
[6] Univ Catania, Dept Educ Sci, Catania, Italy