Human relations studies how people behave in groups. There are characteristics of positive behavior such as having self-confidence, understanding others' viewpoints, making everyone feel included, admitting mistakes, keeping promises, showing respect, thoroughly explaining things, listening to learn, avoiding arguments, being approachable, insisting on serving the community, and focusing on others rather than oneself. Behavior modification aims to precisely define problems in terms of measurable behavior and alter one's environment to help function better using scientific techniques based on learning principles with accountability. Industrial relations involves collective relationships between workers and management.