Relacionar Columnas Brown’s MLU stagesVersión en línea Test yourself on Brown’s research on morphological acquisition by matching pairs of morphemes with the month age of mastery. por Som Person 1 Regular plural 2 Regular past 3 Present progressive 4 Possessive ‘s’ 5 Irregular past 6 Regular third person 26-40 27-33 26-48 28-50 25-46 19-28 1 Early II 2 Late III 3 Early III 4 Late II 5 Late I 6 Early I 12-22 31-32 33-34 27-28 28-30 22-26