assumptions

One ; hint mental processes

internal mental processes, i.e. thoughts that occur between a stimulus and response must be acknowledged

like memory ,thinking ,language

which can be studied through inference

two - hint inferences

it is appropriate to make inferences about cognitive processes

3- hint models

The use of models of explanation, e.g. the mind works like a computer analogy

input→processing→output

4 hint - schema

It recognises the importance of the role of schema

5 hint; scientifically

Internal mental processes can and should be studied scientifically, e.g. laboratory settings