Psychology / Special Education / Blindness / Family / Special Educational Needs / Visual Impairments / Twin Studies / Twins / Affect, Emotion and Feeling / Psicología / PSICOLOGIA DO DESENVOLVIMENTO / Visual Impairment / Feelings / Vision Impairment and blindness / Pais e Filhos / Familia / Deficiência visual / Special needs education / PSICOLOGIA EDUCATIVA / DEFICIENCIA VISUAL / Feelings and Expressions of a Human / Sentimentos / Ceguera / Psicologia / Visual Impairments / Twin Studies / Twins / Affect, Emotion and Feeling / Psicología / PSICOLOGIA DO DESENVOLVIMENTO / Visual Impairment / Feelings / Vision Impairment and blindness / Pais e Filhos / Familia / Deficiência visual / Special needs education / PSICOLOGIA EDUCATIVA / DEFICIENCIA VISUAL / Feelings and Expressions of a Human / Sentimentos / Ceguera / Psicologia