Psychology is a diverse and exciting field.
As pioneers in a relatively youthful science psychologists worldwide strive to improve every aspect of human life, from planning urban construction and zoning to human-computer interaction. Across all disciplines of psychology there is a common thread that unites all researchers and scientists in the field. This unifying discipline is psychometrics. Psychometrics, being concerned with the design and analysis of research and the measurement of human characteristics, has enjoyed a history of rapid growth and development since its origins with the work of Binet in France and Spearman in England, and the earlier efforts of Galton and his anthropometric laboratory. The field of psychometrics has been the genesis of intelligence testing, personality testing, and vocational testing, and has contributed to the emergence of new approaches and methods to psychological measurement based on the demands of society and the emergence of new technology.