Complex sentence: It is the field of study that concentrates on the selection and evaluation of employees; this area of psychology deals with job analysis and defines and measures job performance, performance appraisal, employment tests, employment interviews, employee selection and employee training, and human factors.
Split into simpler sentences: It is the field of study that concentrates on the selection and evaluation of employees. This area of psychology deals with job analysis and defines and measures job performance, performance appraisal, employment tests, employment interviews, employee selection and employee training, and human factors.