1. You define learning as a "change in behavior."  

• I agree that it IS important to change behavior.  
• But, I would emphasize that when we study, we LEARN MORE than is shown by performance on any test.  
• That is, Performance shows something about Learning but it does not show EVERYTHING
• that was Learned.  Performance and Learning are NOT the same thing.   Learning involves developing a POTENTIAL...
• In my field this is known as the Learning-Performance Distinction.  

What we want to understand in cognitive psychology is what we KNOW not just what we DO.

2. You say behavior is important.

• I agree.  
• But, our "internal thought processes" are important too.  
• These processes DO change what we do and who we are.  
• For example, if we are confused, we can often sit in a chair and think it out to become unconfused.  
• These processes of thinking are tough to study, but very important! 
• Much of what we learn in college has to do with sharpening these internal processes (e.g., strategies for learning, working for "higher goals," problem solving).

Let's not leave out Thinking!!
 

B. A Developmental Psychologist adds his/her voice:

We are different "individuals" at different points in our life -- life goes in "stages" and if you forget that fact you'll leave out something essential about being human. Each stage in life builds on past experiences.  That is what makes each of us unique!  To understand a person, you must understand them as developing and  constantly changing.

a three year old child, for example, may not know how to "take another person's perspective" and see the world as they do.  For example, they may be confused in the.... 

Because they do not "do well" in this Task, three year old children are said to be "egocentric."