[Sigia-l] regarding mental model diagramming and gap analysis

[Shaambavi shiva]

Hello Sigies, 
  I've heard about mental model diagram,& gap
analysis. 
Reference: http://adaptivepath.com/team/indi.php

Have some questions about the two. 
  
Where is the methodology for performing these two
outlined? 
Is this scientific ? If yes, Any journal references
where these methods have been published?

Thanks in advance for your replies.
Shaambavi

__________________________________
Do you Yahoo!?
SBC Yahoo! DSL - Now only $29.95 per month!
http://sbc.yahoo.com