| Name | Description | Type | Package | Framework |
| Biography | A class representing the events that happen during a lifetime in an ordonned manner. | Class | org.jscience.psychology.social | JScience |
| Crowd | A class representing a crowd or a sub population in which people share a common reason for gathering but no other relation apart proximity. | Class | org.jscience.psychology.social | JScience |
| Family | A class representing a family which is a group whose individual share some specific bond (usually genetic). | Class | org.jscience.psychology.social | JScience |
| Group | A class representing a group, that is a population seen from a psychological point of view. | Class | org.jscience.psychology.social | JScience |
| HumanGroup | A class representing a human group. | Class | org.jscience.psychology.social | JScience |
| HumanTimeline | A class representing a Set of events. | Class | org.jscience.psychology.social | JScience |
| Tribe | A class representing the basic facts about an organized human group. | Class | org.jscience.psychology.social | JScience |