g., Li et al. 2010) suggests that differences typically observed among computers, including architecture and peripherals, like keyboards and mouse devices, are likely not enough to completely account for our heritability results. Table 5 Leverage analysis of potential errors due to parent and child using the same computing equipment

Finally, we examined correlations between parent and child cognitive performance across three different levels of attention symptoms. Previous #selleck keyword# work has suggested nonlinear relationships between symptoms and behavior (Lubke et al. 2007). Children’s scores on the attention survey were broken into three equal-sized groups. The first group had self-reported Inhibitors,research,lifescience,medical symptoms that summed to less than three (“low” group). The second group had self-reported symptoms that summed to between three and ten (“medium” group). The final group had self-reported symptoms that summed to more than ten (“high” group). We examined the significance of only our three most promising indicators from previous analyses: Working Memory Load 3 and Load 5 Reaction Time and Stop Signal Percent Inhibition. Table

​Table44 presents the correlations Inhibitors,research,lifescience,medical by bin and the P-values associated with those correlations. These data suggest that while symptoms and behavior represent quantitative traits along a continuum, the relationship changes, which may suggest different latent classes (Lubke et al. 2009). Table 4 Correlations Inhibitors,research,lifescience,medical in symptom bins shows the correlations between parent and children across three different symptom groups for spatial working memory and the stop signal Discussion Understanding the neurobiology of behavioral constructs like cognitive control will require testing participants using unsupervised and parallel approaches. We present novel findings on symptom prevalence in the web community of adolescents, an interaction between symptoms and cognitive test performance, and strong suggestion

of significant heritability of measures frequently used to examine cognitive control. Running hundreds or thousands of participants Inhibitors,research,lifescience,medical in lab-based studies is extremely inefficient and practically impossible to execute in a timely manner. Although studies have shown scores on lab-based measures to be highly correlated with those online, there remains skepticism about this approach. the In our study, we used typical construct validity tests done for new psychological measures to support our findings. Given this, we suggest consistent use of the Web for cognitive assessment will help overcome continued inertial bias for lab-based cognitive testing and be instrumental in uncovering the genetic bases of behavior. We sought to characterize a community sample without a diagnosis of ADHD recruited entirely using the web. As such, this is not a “super control” sample (attention symptom sum ranges from 0 to 47).