Reliability and Validity in Employee Selection

Initial Screening: The First Filter

The selection process typically begins with initial screening. The primary objective here is to eliminate candidates who lack the necessary skills, abilities, education, or experience required for the role. This stage acts as a funnel, narrowing a large pool of applicants down to a manageable group of qualified individuals.

Cover Letters and Résumés

One of the earliest methods used is the review of cover letters and résumés. These documents allow hiring managers to assess a candidate's background against the job advertisement. However, this process is often criticized for being subjective and prone to bias. To combat this subjectivity and increase efficiency, many modern firms utilize specialized software to scan résumés for specific keywords and qualifications.

Application Forms

Application forms provide a more systematic and quick way to obtain a variety of information. They are particularly useful for determining if an applicant meets the minimum requirements for education, training, and experience. Two sophisticated versions of application forms include:

• Weighted Application Blanks: These use an objective, statistical approach to analyze the data collected, assigning different "weights" to different pieces of information based on their importance to job success.
• Biodata: These forms collect biographical information and have demonstrated a high correlation with on-the-job success.

Internet Checks and Phone/Video Screening

In the digital age, many hiring managers conduct "Google" searches or check an applicant's social networking sites. While this provides insight into a candidate's persona, it carries significant risks regarding applicant privacy and the potential for unconscious bias or discrimination.

Following the document review, organizations often conduct phone or video screening. These are short, preliminary interviews designed to serve as an initial filter. A major concern for HR professionals is that many of these screening interviews are unstructured, meaning they lack a standardized set of questions, which can negatively impact the consistency and quality of the data collected.

Ensuring Accuracy: Validating Selection Tools

As the selection process moves beyond initial screening into more intensive interviews and preemployment tests, the need for validation becomes even more critical. There are three primary approaches to determining validity:

1. Criterion-related validity: The extent to which a selection tool predicts or correlates with important elements of work behavior. This is often broken down into concurrent validity (testing current employees) and predictive validity (testing applicants and seeing how they perform later).
2. Content validity: The extent to which a selection instrument adequately samples the actual knowledge and skills needed to perform the job (e.g., a driving test for a driver).
3. Construct validity: The extent to which a tool measures a theoretical trait, such as intelligence, personality, or anxiety.

By applying these rigorous standards, organizations can move from subjective "gut feelings" to a data-driven selection process that identifies the best talent while remaining legally defensible.