Integration is the process of interpreting this information. Memory is its storage for later retrieval. Learning disabilities can be classified by their effects at one or more of these stages. Each child has individual strengths and weaknesses at each stage. The first major type of problem at the input stage is a visual perception disability.
Some students have difficulty in recognizing the position and shape of what they see.
The child might also have difficulty distinguishing a significant form from its background. People with this disability often have reading problems. They may jump over words, read the sameline twice, or skip lines. Other students have poor depth perception or poor distance judgement. They might bump into things, fall over chairs, or knock over drinks.