Safe Minds are not happy with the quality of the study at all, while they gave them a grant to partially fund it, they had to trust others to perform it for them
http://www.safeminds.org/wp-content/...esearch-vG.pdf
According to the investigators in a 2008 report to funders:-
“Infant macaques exposed to thimerosal via vaccination scored significantly lower in the reversal phase of discrimination learning tests compared with control animals. The poor performance by some exposed animals indicates that they were particularly prone to failure on the reversal phase suggesting that they were resistant to extinction, i.e. unable to adjust their behavior when the consequences of previous actions had been changed. This behavior and the impaired ability to organize behavior temporally are salient features of ADHD and suggest that environmental neurotoxicants may contribute to the behavioral manifestations of this disorder.”