Predicting 911 Dispatcher Success with Multifaceted Testing with CritiCall 3D

Hosts Jenny Arnez and Mike Callen of TestGenius interview Dr. Dan Biddle, CEO of Biddle Consulting Group and TestGenius, about building and validating CritiCall 3D for 911 dispatcher selection. Biddle outlines his PhD in I/O psychology, decades of testing and validation work, and experience as a testifying expert and Department of Labor consultant. The discussion explains why multifaceted “3D” testing (operational, situational, and behavioral/personality) outperforms single-method selection, clarifies cognitive ability (fluid vs. crystallized), and defines adverse impact, test validation, and essential functions under the Uniform Guidelines. Biddle summarizes a major CritiCall 3D validity project combining three divergent assessments to achieve an operational validity coefficient of 0.634, explaining about 40% of job performance, and compares this to the lower predictiveness of unstructured interviews. They also cover practical implications for agencies, including reducing uncertainty, training costs, and qualification-related turnover, plus guidance on cutoffs, banding, and adverse-impact considerations. 00:00 Welcome and Introductions 00:41 Dan Biddle Background 02:35 CritiCall Origins 03:46 Why 3D Testing 07:03 Cognitive Ability Explained 08:42 Benefits for Applicants 10:53 Adverse Impact Basics 12:50 Essential Functions and Guidelines 15:19 CritiCall 3D Validity Study 20:32 Interviews Versus Testing 23:34 Sponsor Break 24:22 Validity Charts Walkthrough 32:00 Stacking Tests and Overlap 36:11 Practical Impact for Agencies 39:17 Cutoffs Banding and Rank Order 49:11 Wrap Up Key Benefits 55:08 Closing and Resources Resources mentioned: www.criticall911.com www.testgenius.com www.uniformguidelines.com CritiCall 3D Job Performance and Turnover Calculator CritiCall 3D Validation Executive Summary CritiCall 3D Validation Report