A general view of the strength of the reported SNP-intelligence associations can be seen in Fig. 1 below, which shows the frequency of the -log(p)-value corresponding each association in the dataset. Note that this includes all unique associations, so it necessarily includes individual SNPs that were reported multiple times as multiple values. This figure illustrates that most associations are relatively weak, as is evident from the strong right-skew of the histogram; this is because stronger associations will have smaller p-values, which in turn translate into larger -log(p) values.