What Are The Characteristics of a Good Test?

Part 1 in the Validity of Public Safety Assessments Series

The idea for this primer series germinated from a simple question – “Could you do an article looking at the validity of tests used in public safety assessment.” As my forgiving readership already knows, I have trouble containing my thoughts to a single entry. So, as I began to frame out how I would respond to the question of the validity of public safety assessments, the amount of material I wanted to cover started to grow exponentially. At some point, I decided it would be best to start from the beginning with a series of primers on topics related to validity, building up to an answer to the question of “what is the validity of public safety assessments.”

So now this blog will be the first in a series looking at this question. Over a series of articles aimed to inform, but also intended to keep things simple, I will cover:

  1. What are the characteristics of a good test?
  2. What are some authoritative references human resource and assessment professionals can rely upon in evaluating the worthiness of tests?
  3. What is validity?
  4. Are public safety assessments good tests and are they valid?

This first article in the primer series deals with the question of what is a good test. A good test can be defined as one that is:

  • Reliable
  • Valid
  • Practical
  • Socially Sensitive
  • Candidate Friendly.

Briefly and simply, I will review the meaning of each of these characteristics. Continue reading