Self-rated health (SRH) and subjective life expectancy (SLE) are widely used for understanding health and predicting mortality. However, what these items measure remains unclear, due to the lack of conceptual frameworks. We administered a web survey across the United States, Great Britain, Germany, Spain, and Mexico. The questionnaire included SRH…

Being surrounded by peers who are accepting of aggression is a significant predictor of the development and persistence of aggression in childhood and adolescence. Whereas past research has focused on social reinforcement mechanisms as the underlying processes, the present longitudinal study analysed the role of external control beliefs as an…

This research examined how motivation (perceived control, intrinsic motivation, and extrinsic motivation), cognitive learning strategies (deep and surface strategies), and intelligence jointly predict long-term growth in students' mathematics achievement over 5 years. Using longitudinal data from six annual waves (Grades 5 through 10;…