Developing leader identity across the lifespan.

This article reviews foundational scholarship related to leader development, including implications of the integrative theory of leader development and the dynamic model of leader development across the lifespan. Authors provide a rationale for why college is a critical juncture for creating ethical and inclusive leaders for the future and offer suggestions for ways to enhance leadership education.

Latent profile analysis of adolescent temperament: Relations to happiness and health in adulthood.

Introduction: This study provides long-term evidence that profiles of temperament during adolescence are associated with happiness and health over two decades later.

Methods: Data are based on the ongoing Fullerton Longitudinal Study, a community-based sample in the United States. At 14 and 16 years, adolescents (N = 111; 52% male, 90% Euro-American) and their mothers (N = 105) completed the Dimensions of Temperament Survey-Revised, a scale designed specifically to assess adolescents' temperament across a set of attributes.

Go for the gold: Hurdles and winning strategies for conducting longitudinal and nonlinear research in undergraduate leader development.

This article makes a case for longitudinal and non-linear methods when researching or evaluating student leadership development. After a primer on longitudinal methodology, barriers and aligned solutions to methodological challenges are presented.

Positive family relationships across 30 years: Predicting adult health and happiness.

In this prospective study, we examined the link between positive family relationships during childhood and adolescence and health and happiness three decades later in middle adulthood. We also investigated the stability of positive family relationships into adulthood as one possible pathway underlying this long-term association. Data were from the Fullerton Longitudinal Study (FLS) an ongoing investigation in the United States initiated in 1979 when children were aged 1 year with the most recent data collected in 2017.