- There is no simple explanation for how speech is learned as it is a complex process. Both imitation and reinforcement are important for language development. Children learn to speak by imitating others and being reinforced with praise for correct words.
- Typically children start saying single words around age 1, then two-word combinations and short phrases. By age 2 they have a vocabulary of 25-200 words, and by age 4 they speak in full sentences with a vocabulary of around 8,000 words by first grade.
- Self-concept refers to one's perception of themselves including physical appearance, intelligence, personality traits, strengths and weaknesses. It develops from both one's own self-view and reactions from others through messages, either positive