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CONTEMPORARY THEORIES OF ADHD
BarkleyÕs 4 types of executive function:
1. Nonverbal Working Memory,
in which ADHD children have difficulty holding on to current unspoken information. This leads to difficulty carrying information forward from the past to the future, resulting in diminished hindsight, foresight, self-awareness and poor planning.
2. Internalization of Speech (verbal working memory), in which children who are older than pre-school age (who would normally use self-speech for self-regulation) are less able to so. This leads to a reduction in the ability to use information from task failures to inform future performance and diminishes problem-solving abilities.