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 …
The Flynn effect, which refers to the steady rise in intelligence test scores observed over decades, has been a subject of significant interest in psychological research. While this phenomenon has been extensively documented in European populations, fewer studies have explored its presence or reversal in the United States, especially among …
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 …
This study, authored by Jaekel et al. (2019), examines the relationship between being born very preterm (VP) or with very low birth weight (VLBW), cognitive abilities, and wealth accumulation in adulthood. By tracking participants from birth to 26 years of age, the research provides key insights into how early cognitive …
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 …
Research into cognitive testing often aims to clarify the underlying structures of intelligence. This study analyzed data from the Jouve Cerebrals Test of Induction (JCTI) and the General Ability Measure for Adults (GAMA) to identify two distinct factors influencing reasoning abilities: spatial-temporal reasoning and abstract reasoning. Using data from 118 …
Abstract This study aimed to investigate the relationships between tasks of the Jouve Cerebrals Crystallized Educational Scale (JCCES) and General Ability Measure for Adults (GAMA) using multidimensional scaling (MDS) analysis. The JCCES measures Verbal Analogies, Mathematical Problems, and General Knowledge, while the GAMA assesses nonverbal cognitive abilities through Matching, Analogies, …
Abstract This study aimed to investigate the differentiation between cognitive abilities assessed by the Jouve Cerebrals Crystallized Educational Scale (JCCES) and General Ability Measure for Adults (GAMA). A sample of 63 participants completed both JCCES and GAMA subtests. Pearson correlation and factor analysis were used to analyze the data. The …
This post reviews a study conducted by Floyd, McGrew, and Evans (2008), which examines the relationship between cognitive abilities outlined in the Cattell-Horn-Carroll (CHC) framework and writing achievement in school-aged children. By analyzing how different cognitive skills influence basic writing skills and written expression, the study sheds light on the …
