In his capacity as Director of Codification and Research, Dr. Cherrington carried out a thorough investigation to establish and expand the HR Body of Knowledge, which serves as the foundation for the PHR and SPHR tests. The two extensively researched human resource management laws, practices, policies, trends, and literature were aided by Laura Middleton in the codification study. To ascertain the relative significance of the various human resource topics, they also carried out a thorough survey of certified human resource professionals.
As the National Director of Exam Development, Dr. Cherrington examined and enhanced the test bank items for the HR Certification Institute. Along with this, he led workshops on item writing and review for certified HR professionals who had volunteered to help write and/or review items for the PHR and SPHR exams. Dr. Cherrington is the author of four textbooks in addition to being the principal author of the Human Resource Certification Preparation programme. Laura Middleton leads Human Resource Certification Preparation, L.C., as president. She has experience as a researcher and consultant and holds a master's degree in organisational behaviour. She worked with Dr. Cherrington as a research assistant to update two of his textbooks in addition to helping with the HR Certification Institute codification study.
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