Customer’s requirement

Non-functional question (negative)

I like it

I expect it

I’m neutral

I can tolerate it

I dislike it

Functional

question

(positive)

I like it

Q

A

A

A

O

I expect it

R

I

I

I

M

I’m neutral

R

I

I

I

M

I can tolerate it

R

I

I

I

M

I dislike it

R

R

R

R

Q