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 Possessive ‘s’ 2 Regular past 3 Present progressive 4 Irregular past 5 Regular third person 6 Regular plural 25-46 28-50 19-28 27-33 26-40 26-48 1 Early I 2 Late I 3 Early III 4 Early II 5 Late II 6 Late III 27-28 22-26 12-22 33-34 28-30 31-32