Attrition among adolescents and infants involved in a parenting intervention

Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...

Adolescence is a pivotal period of identity formation, during which individuals begin to answer questions central to their sense of self, such as "Who am I?" and "Who do I hope to become?" Both parents and peers play critical roles in guiding adolescents through this complex developmental phase.
Parental Influence on Identity Development
Parents serve as primary guides and managers in an adolescent's life, offering support instrumental in decision-making and personal growth. This guiding role...

Many animals exhibit parental care behavior, including feeding, grooming, and protecting young offspring. Parental care is universal in mammals and birds, which often have young that are born relatively helpless. Several species of insects and fish, as well as some amphibians, also care for their young.

Infants and toddlers show early interest in peers, especially children of similar age and developmental level. Between 6 and 12 months, infants increasingly touch, smile at, and babble to one another. These brief interactions often happen alongside individual play rather than as coordinated activity.Early Peer InteractionAround the first birthday, children begin sharing objects, making eye contact, smiling, and approaching peers. Behaviors such as hitting, grabbing, or repeated touching may...

Socialization is the developmental process through which children learn the habits, skills, values, and motives needed to function effectively in society. It begins within the family and later expands to peers, schools, and cultural institutions.From Compliance to InternalizationEarly socialization often involves compliance, in which children follow parental expectations to gain approval or rewards and avoid punishment. With development, compliance gradually shifts toward internalization, the...

Diana Baumrind's four parenting styles — authoritarian, authoritative, neglectful, and permissive — each influence children's socio-emotional development differently.
Authoritarian Parenting
This style is strict and controlling, with little room for open dialogue. Authoritarian parents demand obedience and often enforce rules with minimal warmth. Children raised this way may lack social skills and initiative, usually comparing themselves to others unfavorably.
Authoritative Parenting
This...