Communication Skill on IT Business

Hirota Ashiya is an IT education consultant. He shows many easy examples of communications on the IT business. If you have some issues to communicate with your managers, stuff or clients, please  refer to this book. There is a small check list on the book's site (sorry, written in Japanese only). Please try it if you're interested.
I tried it and my score was

• Total Score: 97%
  
• Basic Action: 100%
  
• Handling Peple: 95%
  
• Persuade: 100%
  
• Education: 100%
  
• Influence 95%
  
• Leadership: 100%
  
• Presentation: 100%
  
• Resolution: 100%

I should improve the two area of communication skills..
仕事がうまくいくコミュニケーションの技術