Understanding The Differences Between Testers And Developers

Are testers from Venus and developers from Mars? In an ACM article titled An Exploratory Research Study on Interpersonal Conflict between Developers and Testers in Software Development, the authors look at the difference between testers and developers.
As stated in the article, the goal is to better understand the differences between thse two actors in order to produce better software. The authors' call to action is based on two reasons:

1. Because of a trend toward more agile software development, testers are in contact with developers earlier and more often
2. Conflict can have negative consequences not only in relation to the end product but also in relation to the job satisfaction of both developers and tester

This paper points to studies that clearly separate testers from developers in terms of their goals: developers seek to maximize efficiency while testers are all about effectiveness. Developers seek to do get their work done with the least effort while testers seek the highest quality.  Those are clearly different goals that can easily create conflict if each group sub-optimizes. Unless upper management reconciles these different goals and helps align them to reach the broader objective of the company, failure may ensue.

How Much Is Your Offshore/Outsource Testing Defect Find/Fix Cycle Costing You?

Update:  Linda G. Hayes, who is the CTO of Worksoft, Inc., and the founder of three software companies including AutoTester, the first PC-based test automation tool, wrote an interesting article on this subject at StickyMinds.com.  She wrote about the "promise of the same value proposition" and outlined some key factors for success or failure with offshoring.  One of the more interesting, and relevant comments (at least as it pertains to this article), was on "Time to Value".  Linda said:

Offshore resources are never a quick fix, especially for testing. A 2005 report from AMR Research found that it took between fourteen months and three years before the offshore testers had sufficient familiarity to be effective in finding the root cause of problems. Others have found that the lack of domain knowledge resulted in spurious defects being reported that actually increased development overhead due to review and response times. In fact, one organization identified that as many as 33 percent of reported issues were traceable to tester error.

There are many reasons to involve external testing services. Sometimes companies need the expertise of an interoperability lab, other times they are attempting to reduce testing staff costs. Whatever the reason, one cost that should be calculated based on a known process is the Find/Fix Cycle Cost for defects. It's important to evaluate these costs not just based on the hourly rate of the offshore/outsource testing service provider, but on the total cost involved in finding and fixing defects. Ultimately, this cost involves all QA and developer resource costs.