Substantial SNP-based heritability estimates for working memory performance

Population structure can inflate SNP-based heritability estimates.

Heritability of working memory brain activation.

Although key to understanding individual variation in task-related brain activation, the genetic contribution to these individual differences remains largely unknown. Here we report voxel-by-voxel genetic model fitting in a large sample of 319 healthy, young adult, human identical and fraternal twins (mean ± SD age, 23.6 ± 1.8 years) who performed an n-back working memory task during functional...

The Effect of Working Memory Training on Working Memory Capacity and Performance of Novice Karateka

Objective: This study aimed to investigate the effect of working memory (WM) training on WM capacity and performance of novice karate practitioners (karateka). Methods: Research method is quasi-experimental with a pretest posttest control group design. A total of 24 karate practitioners were selected among Alborz (Alborz Province, iran) novice karateka by convenience sampling me...

Working-Memory Performance 1 Running head: WORKING-MEMORY PERFORMANCE The Evidence for A Guessing State in Working-Memory Judgments

We present the results of four experiments designed to assess whether there is a guessing component to visual working memory, where guessing refers to responses that do not reflect the presented stimuli. The presence of guessing is important because such components are intimately consistent with discrete-slot view of WM and inconsistent with many competing views. We use the production paradigm ...

Heritability estimates identify a substantial genetic contribution to risk and outcome of intracerebral hemorrhage.

BACKGROUND AND PURPOSE Previous studies suggest that genetic variation plays a substantial role in occurrence and evolution of intracerebral hemorrhage (ICH). Genetic contribution to disease can be determined by calculating heritability using family-based data, but such an approach is impractical for ICH because of lack of large pedigree-based studies. However, a novel analytic tool based on ge...