Why do the authors think this contribution is important or significant

Why do the authors think this contribution is important or significant

After reading the attached article, please answer the following questions.

Why do the authors think this contribution is important or significant?

Critical evaluation: The article is okay, but … (add sentences here).

How convincing is the authors’ argument? In particular, is their answer to the question asked well substantiated by a logical argument and/or firmly grounded in the empirical data?

BONNER AND ADAMS