The research is a correlational study to look for causes and factors relating to the design of written documents (professional reading materials) and identify those relationships that are useful for communication designers. The research specifically targeted the relationships between perception and reader’s past experiences and appearance of the written documents. A preliminary survey, such as interviews, discussions, questionnaires and brainstorming sessions are conducted to establish the observable attributes related to perception which are reader’s interests, importance of information and written documents complexity. Finally, the research used Structural Equation Model (SEM) to identify significant differences and analyze strong and weak correlations between these attributes. In general, the results of the study shows that the attribute appearances of a written documents with excellent visualizations for information display shows a strong correlation with interests while the attributes importance is weakly correlated with the complexity of the documents.

Abstract
 1. Introduction
 2. A theoretical overview of the proposedhypothetical model
  2.1 Written document(professional reading material)
  2.2 Perception: The relationship betweenInterest, Importance and Complexity
  2.3 Understanding: The relationship betweenInterest and Appearance
  2.4 The relationship between Experience,Appearance and Perceptions
 3. Methods
  3.1 Instrument development
  3.2 Measure
  3.3 Sample
 4. Results
  4.1 Reliability and validity
  4.2 Model Fitness
  4.3 Structural Model Testing
 5. Discussion
  5.1 Relationship among correlated variables ofperception (Interest, Importance andComplexity)
  5.2 Relationship of Appearance with othercorrelated variables
  5.3 Relationship of Experience with othercorrelated variables
 6. Conclusions
 REFERENCES

• Siti Shukhaila Shaharuddin(Department of Service Design, Graduate School of Design, Dongseo University)
• Lee Sung-Pil(Department of Service Design, Graduate School of Design, Dongseo University) Corresponding Author