Understanding how genetic and environmental influences shape cognitive abilities remains a cornerstone of psychological research. Jiang et al. (2024) present an important study that examines these influences through a structured twin-based model. This research provides insight into how basic and higher-order cognitive functions are differentially affected by genetic inheritance and …
Shaping Hierarchical Cognitive Abilities
Recent research by Jiang et al. (2024) sheds light on the distinct genetic and environmental influences shaping hierarchical cognitive abilities in adults. By categorizing cognitive functions into two levels—basic processes and higher-order functions—this study provides valuable insights into how these abilities develop and differ in their origins. Background Human cognition …
CORD7 Mutation and Its Impact on Human Cognition
The study by Paul et al. (2022), published in Brain, investigates the effects of the CORD7 mutation on synaptic transmission and its connection to cognitive abilities. This mutation, linked to increased verbal IQ and enhanced working memory, alters the RIMS1/RIM1 protein at presynaptic active zones. The research offers new insights …
Epigenetic Influence on IQ Malleability: Insights from the IMAGEN Project
The study by Kaminski et al. (2018) investigates the intricate relationships between genetic, epigenetic, and neurobiological factors that contribute to variability in general intelligence (gIQ). By focusing on dopamine D2 receptor (DRD2) gene modification, gray matter density, and striatal functional activation, the research sheds light on the complex interplay influencing …