Psychology Essay-Developmental Psychology

If you choose to handle my essay please make sure this is 100% original work.

Here are my requirements of this essay:

Word counts: 400-600 words

Format: This is going to be graded automatically by the system, so please provide a 5-paragraph format which includes an introduction, 3 paragraphs of discussion, and a conclusion.At the beginning of each paragraph, please clearly indicate main points of that paragraph.

Contents: Please read the instruction carefully and answer all the questions. If you need any reference text, please contact me.

Grammar: There should be as few grammar errors as possible.

Quality: Please provide a 80%+ work. 

Instruction of this essay:

Using specific examples, differentiate between the thinking patterns of a 3-year-old preschooler and a 9-year-old student, according to Piaget's theory of cognitive development.