Attachment Theory: A psychological framework that examines how early relationships with caregivers, such as parental divorce, can influence one's future relationships.
Longitudinal Study: A research design that tracks participants over an extended period to observe changes and determine if there is a relationship between parental divorce and adolescents' romantic relationships later in life.
Control Group: In an experimental design, a group similar to the experimental group but not exposed to the independent variable (parental divorce) to compare and measure its effects accurately.