verb to be.
i. Children begin to express negation by late stage 1 and develop its proper use in the early part of stage 4.
i) Three periods of negation development have been identified that roughly correspond to the stages
described by Brown.
(a) Late stage 1-Early stage 2 (MLU 1.5-2.5): “No kick that.”
(b) Late stage 2-Early stage 3 (MLU 2.25–2.75): “I no like that.”
(c) Late stage 3-Early stage 4 (MLU 2.75-3.5): “Daddy is not going to work.”
ii) Bloom described three variations of negation during stage 2: nonexistence, rejection and denial.
iii) In stage 3, there are continued advances in the use of the negative form as the child adds no or not
between the subject and predicate, and adds auxiliary forms to negative forms.
(a) Brown considered the changes children make in the use of the negative form to be one of the most
important advances in stage 3.
j. Speakers can ask questions that elicit yes/no answers, and they can ask questions beginning with who,
whose, whom, what, where, which, when, why or how.
i) Three periods in the development of interrogative forms have been identified.
ii) Yes/no questions emerge between the ages of 25-28 months.
iii) During stage 2, children commonly use what and where questions, and why questions are added.
iv) In stage 3, the child is able to invert auxiliary verbs to ask questions, as well as invert copular verbs to
ask yes/no questions. The most frequent wh– words in stage 3 are what and where, but the child also
uses why, who, and how.
k. The child is about 31 months old before she begins to form true imperative sentences.
l. When the child begins to put words together, his vocabulary grows rapidly.
i) It has been estimated that between the ages of 19 months and 6 years, the child adds an average of nine
new words every day and by the age of 6 may have a comprehension vocabulary that reaches
approximately 14,000 words.
ii) The child at 24 months has about 200-300 words in his expressive vocabulary. The child in the latter
months of stage 2 will probably have a productive vocabulary of about 400 words and at the close of
stage 3, about 900.
iii) The child appears to acquire so much information about words so quickly, at least in part, because of
fast mapping.
m. Notable characteristics of pragmatics/conversation during stages 2 and 3 include use of the word “please,”
increased talking, greater skill in topic introduction, interruptions of the conversational partner, 2 turns per
conversational topic, topic collaborating, use of conversational repair strategies and lack of requests for
conversational repairs from adults.
i) The child’s presuppositional skills remain relatively undeveloped.
n. Caregivers co-construct narratives with children by providing the maximum amount of support necessary to
understand the narrative.
i) Narrative development plays a significant role in academic success.
ii) Narrative discourse occurs when the speaker produces at least two utterances in a temporal order about
an event or experience in the past or future.
iii) In order to produce narratives, a child must use multiple aspects of language and cognition.
iv) Children in this stage use recounts and accounts employing the strategies of chaining and centering.
v) The earliest attempts at narratives between ages 2-3 years consist of heaps.
o. The child’s attention to acoustic and linguistic language features and his ability to imitate them is called
metalinguistics.