Piaget’s stage theory of development is different from the information-processing theory in that Piaget’s theory suggests that development occurs through four distinct stages whereas the information processing theory leans more towards a continuous pattern of development. However there are some similarities between these theories as well. Each theory suggests that children will have limitations in their thinking abilities throughout their development. Piaget suggests that these limitations are based on what developmental stage the child is in; the information-processing theory (IPT) states that limitations are based on a child’s functional short-term memory capacity which is linked to age.
In taking a look at cognitive limitations based on Piaget’s model it can be seen that children in the concrete operational stage are capable of thinking of only two attributes at once, meaning “they can seriate on one dimension”. For example, a concrete operational student “can order objects on some dimension, such as shortest to tallest or lightest to heaviest”, but would not be able to order the objects from shortest to tallest and in order of color (Pressley & McCormick, 2007, p. 64). This limitation is similar to the limitations suggested in the IPT, where children have a limited capacity of short term memory.
IPT proposes that as the brain increases in size, children will be able to hold more items in their short-term memory. This means that their short-term memory capacity is largely based on age, for example a two-year-old can hold two items in their short term memory, a five-year-old about four items, a seven-year-old about five items, and so on, with adolescents holding about seven items (Pressley & McCormick, 2007, p. 94, Table 4.1). Some theorists believe that these “developmental changes in short-term capacity can explain many of the stage-like shifts with development originally described by Piaget” (Pressley & McCormick, 2007, p. 95).
Both of these theories suggest that children can only hold on to so much information at one time, and limitations increase the younger the child is. It is very important that teachers recognize where their students are at developmentally and plan or adjust lessons accordingly. Pressley and McCormick suggest that “when students have difficulty with classroom tasks due to working memory limitations, teachers can support their students by breaking tasks down into parts that are less memory demanding or by providing external supports that reduce the amount of information the students have to hold in their heads at one time” (Pressley & McCormick, 2007, p. 96). This will prevent students from feeling overwhelmed and make it easier to grasp the content of the lesson. Also the strategies of rehearsal, elaboration, and organization can help students to hold information.
*Example strategies for improving reading comprehension
Pressley, M. & McCormick, C.B. (2007). Child and adolescent development for educators. New York: NY: Guildford Press