Pragmatic language skills include behaviours such as conversational or other communicative turn-taking, making good use of gestures and maintaining eye contact. As well as these specific aspects of language and communication, children must be able to both express their thoughts (expressive language) and understand those of others (receptive language) in both social and learning situations. As for the term "communication disorders", it includes a wide variety of problems in language, speech, and hearing. Speech and language impairments include articulation problems, voice disorders, fluency problems (such as stuttering), aphasia (difficulty in using words, usually as a result of a brain injury), and delays in speech and/or language (Cohen, 2001, p.134-78).
As for the definitions of Emotional and Behavioral Disorder (EBD), there are several of them, but basically it refers to a condition in which behavioral or emotional responses of an individual are so different from his/her generally accepted, age appropriate, ethnic or cultural norms that they adversely affect performance in such areas as self care, social relationships, personal adjustment, academic progress, classroom behavior, or work adjustment (Forness and Knitzer, 1992, p.12-21).
In the first five years of life, the evolution of communication can be divided into three periods. ...